chem 24 Flashcards
(CH3)2CHOH is the chemical formula for which specific alcohol?
Isopropyl alcohol or 2 propanol
According to Avogadro’s law what is the volume of 1 mole of any gas at standard temperature and pressure?
22.4dm3
C2H6O is the molecular formula for which alcohol?
Ethanol
Does the electrostatic potential energy of a system of two charges increase, decrease or remain the same as the distance between them increases?
Increase
Does the electrostatic potential of a system of two charges increase decrease or remain the same as the distance between them increases?
It increases
How many isomers does the hydrocarbon with the formula C4H10 have?
2
How many valence electrons do elements in group 18 of the periodic table have?
8
In degrees Celsius to 1 decimal place what is the transitional temperature between rhombic Sulphur and monoclinic Sulphur?
95.6℃
In the electrolysis of aqueous sodium chloride which gas is produced at the cathode?
Hydrogen
Is the quantity of electricity required to liberate 10g of cupper from a cupper compound Closer to 25
0
Name any one of the two elements that was first discovered by Louis Nicolas Vauquelin?
Chromium or Beryllium
potassium hydrogen phthalate often simply called KHP is an acidic compound what is its chemical formula?
C₈H₅KO₄
Small quantities of which gas can be safely tested in the so-called squeaky pop Experiment?
Hydrogen
Sodium chloride silver chloride potassium chloride or magnesium chloride which of these is an insoluble salt?
Silver chloride
Specifically, state what is produced when copper sulphate pentahydrate is heated?
Anhydrous Copper Sulphate or salt
To have an octet oxygen must gain how many electrons?
2
To the nearest whole number what is the molar mass of Iron?
56 g/mol
Using Methyl orange as an indicator What is produced in the titration of sodium carbonate and Hydrochloric acid?
Sodium chloride, water and carbon dioxide
What are the final products in the electrolysis of cupper sulphate using Inert electrodes?
Cupper metal and Oxygen gas
What are the products which results from electrolysis of cupper sulphate solution using inert electrodes?
Cupper and oxygen
What are the two main elements in the alloy electrum? Gold and silver
What colour does the indicator methyl orange turn in a basic solution? Yellow
What compound is largely responsible for the foul odour of rancid butter? Butanoic acid
What inorganic compound has the formula CaSO4? Calcium sulphate
What is another name for a reducing agent which is a chemical species that loses electrons and is oxidised in a chemical reaction? Reductant
reducer or electron donor
What is produced when aqueous? Cupper (II) Ion reacts with aqueous iodide ion? Solid Cupper (I) Iodide and aqueous iodide
What is produced when magnesium reacts with Hydrochloric acid? Magnesium chloride and hydrogen
What is the atomic number of Chlorine? 17
What is the best method to separate an aqueous mixture of cupper (II) Oxide and Cupper (II) sulphate? Filtration
What is the chemical formula for acetic acid? CH3COOH
What is the chemical formula for Adipic acid? C₆H₁₀O₄
What is the chemical formula for barium Sulphate? BaSO4
What is the chemical formula for potassium perchlorate? KClO4
What is the chemical formula for Stibnite? Sb2S3
What is the chemical formula for zinc phosphate? Zn3(PO4)2
What is the chemical formula of potassium persulfate? K2S2O8
What is the collective name for the elements with atomic numbers from 57 to 71 on the periodic table? Lanthanides
What is the descriptive term used for a very large molecule having a polymeric chain structure? Macromolecule
What is the formula for Chromic Oxide? Cr2O3
What is the formula for iron (III) Chloride? FeCl3
What is the formula for lead (ii) Sulphide? PbS
What is the formula for Lithium Nitride? Li3N
What is the formula for the acetate anion? C2H3O2-
What is the formula for the alkane tetradecane? C14H30
What is the formula for the dehydrant phosphate ion? H2PO4-
What is the formula for the dichromate anion? Cr2O72-
What is the formula for the mercurous ion? Hg22+
What is the full and complete name for a compound whose molecule has the same number of atoms of each element but with logically distinct bonds between them? Structural isomer
What is the full chemical name for glauber’s salt? sodium sulfate Decahydrate
What is the full name of the principle based on the fact that the unknown concentration of the known solution can be determined by titrating it with a known volume of another solution with known concentration? Volumetric Analysis
What is the general formula for the homologous series which has a compound with the formula C3H8? CnH2n+2
What is the general name given to a type of paper that changes colour according to the acidity of a solution in which it is dipped? PH Paper
What is the molecular mass of ethanol to the nearest whole number? 46 g/mol
What is the name and symbol for the element in group 16 of the periodic table with the atomic number 34? Selenium
Se
What is the name for a chemical reaction in which energy is absorbed? Endothermic Reaction
What is the name for a series of compounds with similar chemical properties and some functional groups differing from the successive member by CH2? Homologous Series
What is the name for a substance that produces two hydrogen ions per molecule of acid when it gets completely dissociated in water? Dibasic acid or diprotic acid
What is the name for the change in the amount of a reactant or product per unit time? Rate of reaction
What is the name for the colourless flammable toxic liquid with an ammonia like odour and chemical formula N2H4? Hydrazine
What is the name for the form of polymerization where smaller molecules or monomers react with each other to form a larger structural unit while releasing by products such as water or methanol? Condensation
What is the name for the method of separating molecules having different densities by spinning them in solution around an axis at high speed? Centrifugation
What is the name for the organic molecule comprising two benzene rings fused together and has the Chemical formula C10H8? Naphthalene
What is the name of the chemical bond formed when two atoms share two electrons? Covalent bond
What is the name of the most radioactive element known to man? Oganesson
What is the number of shared electrons pair in the methane molecule? 4
What is the oxidation state of cupper in cupper iodide? +1
What is the specific name for the process that involves repeated condensation reactions between two different bifunctional or trifunctional monomers? Condensation polymerization
What kind of bond is found in hydrogen and nitrogen gas molecules? Covalent bonds
When calcium Nitrate is heated it decomposes to which 3 substances? Calcium oxide
Nitrogen dioxide and oxygen
Which allotrope of carbon has a boiling point of 4
200°C? Graphite
Which Law states that the rate at which a body loses its heat to its surroundings is proportional to the excess of mean temperature of the body over that of the surroundings? Newton law of cooling
Which of the following compounds is soluble on cold water
Lead chloride
Which of the following oxides is amphoteric Lead (II) Oxide
Sodium Oxide
Which organic compound has the formula C5H12? Pentane
Whose Law states that a solvents partial vapour pressure in a solution is equal or identical to the vapour pressure of the pure solvent multiplied by its mole fraction in the solution? Raoult’s law
With the formula (C2H4)N this is the most commonly used plastic what is its scientific name? Polythene or polyethylene
CH3COOH is the formula for which substance? Ethanoic acid
AlF3 is the formula for what chemical formula? Aluminium fluoride
All combustion reactions require a specific chemical as a reactant
name it? Oxygen
C3H8 is the molecular formula of which alkane? Propane
CaH2 is the formula for what chemical compound? Calcium Hydride
CnH2n-2 is the general formula for which group of organic compounds? Alkyne
Describe what will be observed When sodium or potassium hydroxide is added in excess to a solution of a cupper salt? A Greenish blue precipitation of Cupper hydroxide
Feldspar is an ore of which element? Aluminum
H3PO4 is the formula for which compound? Phosphoric acid
How many carbon atoms does butane have? 4
How many neutrons are in the element gadolinium? 93
How many neutrons are in the element scandium? 24
How many protons are in the element strontium? 38
Hydrogen peroxide contains both polar and non-polar covalent bonds is this statement true or false? True
In chemistry what is a substance obtained by the reaction of an acid and a base called? Salt
In what group is the element lithium on the periodic table? 1
In what group is the element scandium on the periodic table? Group 3
In which group of the periodic table are the alkali earth metals found? Group 2
In which group of the periodic table is the element cobalt? 9
In which group of the periodic table is the element titanium? Group 4 or 4B
In which group of the periodic table is the element with atomic number 26? Group 8
In which group of the periodic table is the element with atomic number 31? Group 13
In which group of the periodic table is the element with the atomic number 20 found? Group 2
Nickel was first identified and isolated as an element by which Swedish Chemist? Axel Cronstedt
RCONH2 is the general formula for which group of compounds? Amide
Rock salt is an ore of which element? Sodium
The atomic mass is expressed in what units? AMU
The element oxygen is found in what 3 naturally occurring stable isotopes? 18O
17O
The German chemist August Kekulé is known for the of what chemical? Benzene
The German-Dutch chemist Johann Rudolf Glauber was the first to discover the production of which chemical compound? Potassium permanganate
The presence of what element is the main difference between organic and inorganic acids? Carbon
Titanium was first identified by which English chemist? William Gregor
To the nearest whole number what is the molar mass of lithium oxide? 30g/mol
Using the universal indicator what colour is the PH range 1-3? Red
Using the universal indicator what colour is the PH range 8-11? Blue
What are the products of a combustion of a hydrocarbon? Carbon dioxide and water
What are the two stable isotopes of carbon? Carbon 12 and 13
What compound consists of 3 carbon atoms 6 hydrogen atoms and 1 oxygen atom? Acetone
What do we call the longest side of a right-angled triangle? Hypotenuse
What element is naturally found in the earth’s crust in the ores of Valentinite and stibnite? Antimony
What is formed when Barium iodide reacts with sodium sulphate? Barium sulphate and sodium iodide
What is formed when potassium oxide reacts with hydrogen chloride? Potassium chloride and water
What is formed when potassium oxide reacts with water? Potassium hydroxide
What is the 3rd of the F block elements? Uranium
What is the atomic mass of the element sodium to the nearest whole number? 23
What is the atomic mass of the element sulphur to the nearest whole number? 32
What is the atomic number of the element with the symbol Au? 79
What is the atomic number of the element with the symbol Cu? 29
What is the chemical formula for Boric acid? H3BO3
What is the chemical formula for boric acid? H3BO3
What is the chemical formula for carbon tetraiodide? CI4
What is the chemical formula for cobalt (II) Chloride? CoCl2
What is the chemical formula for Cuprous Nitrate? Cu(NO3)2
What is the chemical formula for ethane? C2H6
What is the chemical formula for gold (I) Nitride? Au3N
What is the chemical formula for oxalic acid? C2H2O4
What is the chemical formula for phenyl? C6H5
What is the chemical formula for the compound toluene? C7H8
What is the chemical formula for the substance known as Condy’s crystals? KMnO4
What is the formula for barium iodide? BaI2
What is the formula for carbon tetrafluoride? CF4
What is the formula for carbon trioxide CO3
What is the formula for selenide ion? Se2-
What is the formula for the arsenide ion? As3-
What is the formula for the chemical compound Xenon difluoride? XeF2
What is the formula for the chromate ion? CrO42-
What is the formula for zinc Bicarbonate? Zn(HCO3)2
What is the formula for zinc chloride? ZnCl2
What is the general formula for alkenes? CnH2n
What is the last of the F block elements? Lawrencium
What is the maximum number of electrons that can be accommodated in the 3rd shell of an atom? 18
What is the maximum number of electrons that can be accommodated with in the 5th shell of an atom? 50
What is the molar mass of calcium carbonate? 100g/mol
What is the name for a reaction in which an atom or ion in a compound is replaced by an atom or an ion of another element? Displacement reaction
What is the name for reactions involving simultaneous reduction and oxidation of atoms which converts to two compounds
one of higher and one of lower oxidation states? Disproportionation reaction
What is the name of the electrode in an electro…
What is the name of the phenomenon in which two compounds have the same chemical formula but different Chemical structures? Isomerism
What is the only metal on the periodic table that exist in is liquid state at room temperature? Mercury (Hg)
What is the only naturally occurring radioactive Nobel gas? Radon
What is the pale greenish yellow solid with the formula PCl5 called? Phosphorus pentachloride
What is the scientific name for the substance known as Condy’s crystals? Potassium permanganate
What is the symbol for the chemical element tungsten? W
What is the symbol for the chemical element Yttrium? Y
What is the symbol of the sixth element in group 2 of the periodic table? Ra
What is the valency of beryllium? 2
What is the valency of the element aluminium in aluminium phosphate? 3
What is the valency of the element chlorine? 1
What is the valency of the element fluorine in calcium fluride? 1
What is the valency of the element terbium? 2
What is the valency of Titanium? 4
What is the valency…?
What name is given to the binding capacity of an atom measured by the number of hydrogen atoms that it combines with? Valency
What substance is used for the cathode in lead acid automobile batteries? Lead dioxide
What term is used to describe a type of reaction in which energy is released in the form of heat? Exothermic
What was the first element that was made artificially? Technetium
When hydrochloric acid reacts with sodium hydroxide what is produced? NaCl and H2O (Sodium Chloride and water)
When iron is added to cupper sulphate solution what does it displace? Cupper metal
Which artist recorded the song ocean eyes in 2016? Billie Eilish
Which French chemist stated that the proportion of elements by weight in a compound will always remain exactly the same? Joseph Proust
Which halogen is a liquid at room temperature? Bromine
Which halogen is radioactive? Astatine
Which law states that if two elements combine to form more than one compound the masses of 1 element that combine with a fixed mass of the other are in the ratio of small whole numbers.? Law of multiple proportions
Which organic liquid has the chemical formula C2H6OS? Dimethyl sulfoxide
Which scientist discovered Chlorine and manganese? Carl Wilhelm Scheele
Which scientist discovered the element
Nickel? Axel Fredrik Cronstedt
Which specific type of bond is found between two atoms which share a single pair of electrons? A single covalent bond
Which theory in chemistry states that a chemical reaction can only occur between particles when they hit each other? Collision theory
Which theory in chemistry states that as two reactants come together the potential energy increases and reaches a maximum? Transition state theory
Who discovered the chemical element with the symbol Cl? Carl Scheele
Who discovered the element with the symbol Li? Johan Arfwedson
Who discovered the Nobel gasses? William Ramsey
What is the formula for the compound strontium sulphate? SrSO4
What is the formula for the compound Zinc Carbonate? ZnCO3
All the elements of group 13 of the periodic table posses how many electrons in their valence shell? 3
Alloys of which metal can be made as strong as steel but half as much in weight? Titanium
Elements in which group of the periodic table are also known as chalcogens? Group 16
How many carbon atoms does Benzoic acid have? 7
How many carbon atoms does Pyridine have? 5
How many electrons are there in the valence shell of a carbon atom? 4
How many electrons are there in the valency shell of an oxygen atom? 6
How many periods or rows are there on the periodic table? 7
How many valence electrons are in a phosphorus atom? 5
Hydrogen chloride ionizes in water to give what cation? Hydrogen
In which group of the periodic table is the element bismuth? Group 15
In which group of the periodic table is the element lead? Group 14
On which block of the periodic table can you find the element copper? D block
Sodium hydroxide disassociates in water to give what diatomic anion? Hydroxide (OH-)
The addition of which element is mainly responsible for imparting the stainless property to steel? Chromium
The rows on the periodic table are arranged so that Non-metals are on which side? Right
To the nearest whole number what is the relative atomic mass of Sodium carbonate? 106g/mol
To the nearest whole number what is the relative atomic mass of sodium hydroxide? 40 g/mol
To what group in the periodic table does chlorine belong? 17
To what group in the periodic table does silicon belong? 14
To which group of the periodic table does the element boron belong? 13
To which group of the periodic table does the element cobalt belong? 9
To which group of the periodic table does the element with the atomic number 75 belong? Group 7
Wha is the formula for Caesium monoxide? Cs2O
What Chemical compound has the chemical formula C3H6O2? Propanoic acid or ethyl acetate
What chemical compound has the formula C6H5COOH? Benzoic acid
What chemical element has an atomic number of 36? Krypton
What chemical element has an atomic number of 44? Ruthenium
What chemical element has an atomic number of 46? Palladium
What chemical element has the atomic mass 12.011? Carbon
What chemical element has the atomic mass 55.85? Iron
What chemical element has the atomic number 102 and symbol No? Nobelium
What chemical element has the atomic number 77 and symbol Ir? Iridium
What element has the atomic number 30? Zinc
What element in the periodic table has the highest electrical conductivity? Silver
What is another name for fruit sugar? Fructose
What is the atomic number for the element with atomic number Po? 84
What is the boiling point of water in degrees Fahrenheit? 212°F
What is the boiling point of water on the Fahrenheit scale? 212°F
What is the chemical formula for boric acid? H3BO3
What is the chemical formula for butanoic acid? C3H7COOH or C4H8O2
What is the chemical formula for carbolic acid? C6H5OH
What is the chemical formula for cyano methane? C2H3N or CH3CN
What is the chemical formula for dimethyl sulphide? C2H6S
What is the chemical formula for Dinitrogen Pentoxide? N2O5
What is the chemical formula for gold oxide? Au2O3
What is the chemical formula for lithium iodide? LiI
What is the chemical formula for maltose? C12H22O11
What is the chemical formula for oxalic acid? C2H2O4
What is the chemical formula for platinum oxide? PtO2
What is the chemical formula for potassium chlorate? KClO3
What is the chemical formula for sodium bisulphite? NaHSO3
What is the chemical formula for sodium nitrite? NaNO2
What is the chemical formula for tartaric acid? C4H6O6
What is the chemical formula for toluene? C6H5CH3
What is the chemical formula of dimethyl sulfoxide? C2H6OS
What is the chemical formula of sulphur tetrafluoride? SF4
What is the chemical symbol for the element with atomic number 92? U
What is the colour of calcium chloride compound? White
What is the colour of pure iron? Silvery grey
What is the formula for Nitric acid? HNO3
What is the formula for sulphuric acid? H2SO4
What is the formula for the carbide ion? C4-
What Is the formula for the chemical compound hydrazine? N2H4
What is the formula for the chemical compound titanium dioxide? TiO2
What is the formula for the compound magnesium carbonate? Mg CO3
What is the formula for the compound methyl-ethyl ketone? C4H8O
What is the formula for the ferric ion? Fe3+
What is the formula for the Helium Hydride ion? HeH+
What is the formula for the Plumbous ion? Pb2+
What is the formula for the Strontium ion? Sr2+
What is the formula for Tungsten Oxide? WO3
What is the freezing point of water in degrees Fahrenheit? 32°F
What is the general formula for alkenes? CnH2n
What is the highest atomic number of elements which are actinides? 103
What is the IUPAC name of Ammonia? Azane
What is the last element in group 5 of the periodic table that does not occur naturally? Dubnium
What is the least electronegative element on the periodic table? Cesium
What is the molar mass of hydrogen sulphide to the nearest whole number? 34g/mol
What is the molar mass of potassium hydroxide to the nearest whole number? 56 g/mol
What is the molar mass of potassium hydroxide to the nearest whole number? 56 g/mol
What is the molar mass of sodium fluoride to the nearest whole number? 42 g/mol
What is the molecular formula for nonane? C9H20
What is the molecular formula for Undecane? C11H24
What is the most abundant alkaline earth metal? Calcium
What is the most common alkali metal? Sodium
What is the most common colour that you can see in pure carbon? Grey black
What is the most elector negative element in the periodic table? Fluorine
What is the most metallic element on the periodic table? Francium
What is the name for a technique where a solution of known concentrations is used to determine the concentration of an unknown solution? Titration
What is the name for the tendency for an atom in a molecule to attract the shared pair of electrons towards itself? Electronegativity
What is the name of the functional group that consists of a carbon atom double bonded to an oxygen atom? Carbonyl group
What is the name of the last element of the lanthanide series on the periodic table? Lutetium
What is the name of the number of moles of solute that is present in 1Kg or a solvent? Molarity
What is the scientific name for table sugar? Sucrose
What is the smell of the compound hydrogen sulphide? Like that of rotten eggs
What is the value of absolute zero in degrees Celsius? -273.15℃
What radioactive chemical element has the atomic number 97? Berkelium
What type of bond is formed by a complete transfer of valence electrons to obtain stability? Ionic
Which block of the periodic table can you find the element calcium? S
Which chemical compound has the formula Ba(OH)2? Barium Hydroxide
Which chemical compound has the formula Mg(OH)2? Magnesium Hydroxide
Which element has the atomic number 18? Argon
Which element on the periodic table has the atomic number of 86? Radon
Which famous chemist developed the Periodic Table? Dmitri Mendeleev
Which Law states that the pressure exerted by a gas is proportional to the temperature of the gas when the volume is a constant? Gay Lussac’s Law
Which of the following acids is the strongest nitric
acetic or phosphoric? Nitric
Which of the following acids is the weakest Hydrochloric
lactic or citric? Lactic
Which theory states that all matter is composed of extremely small particles called atoms? Dalton’s atomic theory
Who developed a process in which ammonia was used obtain nitric acid? Wilhelm Ostwald
Who discovered the element cobalt? Georg Brandt
Who discovered the element hydrogen? Henry Cavendish
Who discovered the element with the symbol Rh? William Wollaston
Who is often called the first modern chemist? Robert Boyle
Who was the first to discover the element with the symbol V? Andrés Manuel del Rio
What is the chemical formula of sodium hydrogen phosphate? Na2HPO4
Give the full name of one of the chemists who discovered the element neon? William Ramsay or Morris Travers
To have an octet the element magnesium loses how many electrons? 2
To the nearest tenth and including the units What is the relative atomic mass of lithium? 6.9 g/mol
What are the group 1 elements on the periodic table called? Alkali metals
What are the organic compounds consisting of only carbon and hydrogen atoms called? Hydrocarbons
What chemical compound has the chemical formula CaCO3? Calcium carbonate
What element on the periodic table has 17 protons and 18 neutrons? Chlorine
What is defined as the property of a material by which the material is drawn to a smaller section by applying tensile stress? Ductility or ductile
What is the atomic number of fluorine? 9
What is the atomic number of the element oganesson? 118
What is the chemical formula for Magnesium (II) sulphate hepta hydrate? MgSO4 . 7H2O
What is the chemical formula for sodium phosphide? Na3P
What is the chemical formula for sulphur trioxide? SO3
What is the collective name for the elements with atomic numbers from 89 to 103 on the periodic table? Actinides
What is the colour of the universal indicator in a neutral solution of PH 7? Green
What is the colour of the universal indicator in the presence of a strong alkali with a PH greater than 11? Indego or violet
What is the empirical formula for the mineral known as magnetite? Fe3O4
What is the formula for aluminium Phosphate? AlPO4
What is the formula for carbon tetrabromide? CBr4
What is the formula for silver nitrate? AgNO3
What is the formula for silver permanganate? AgMnO4
What is the formula for the Manganate Ion? MnO42-
What is the formula for the stannic ion? Sn4+
What is the full name of the law which states that the amount of chemical change during electrolysis is directly proportional to the quantity of electrical charge cast? Faraday’s first law of electrolysis
What is the molecular formula for hydrogen peroxide water? H4O3
What is the Molecular formula for trioxidane? H203
What is the name and symbol for the element in group 18 of the periodic table with the atomic number 36? Krypton
Kr
What is the name for a bond where electrons are transferred? Ionic Bond
What is the name for the rarest element in group 16 of the periodic table? Polonium
What is the name given to elements having the same atomic number but a different mass number? Isotopes
What is the name given to elements having the same mass number but different atomic number? Isobars
What is the name of the stable Isotope of hydrogen that contains only a single neutron in the nucleus? Deuterium
What is the name used to refer to atoms having the same number of neutrons but different number of protons? Isotones
What is the only letter of the alphabet that is not used in the periodic table in chemistry? J
What is the oxidation number of oxygen in nitric acid? -2
What is the simplest of all atoms containing a single proton and a single electron? Hydrogen
What is the simplest of all atoms containing a single proton and a single electron? Hydrogen
When acidified potassium dichromate (VI) solution reacts with alcohol what is the colour change? Orange to green
Which element on the periodic table has 30 protons? Zinc
Which organic compound has the molecular formula C6H6? Benzene
Which Scientist discovered alpha and beta rays and first proposed the laws of radioactive decay? Ernest Rutherford
Which scientist first proposed the theory for the hydrogen atom? Niels Bohr
