#2 Final Exam Study Guide Flashcards
What is the formula to calculate density?
Density = Mass/Volume
What is true about the volume and pressure about gas,
a) proportional
b) inversely proportional
c) neither
b
One mole of any gas will occupy how much space?
22.4 L
True or False, during a state of equilibrium, particles are still in motion.
True
What is the formula to calculate pressure?
Force/Area
30 degrees Celsius is how many degrees in kelvin?
303.15
Do ideal gases exist in the real world?
No
True or False, in molecular form, a chemical equation is balanced into its simplest form
False, in an empirical formula is when it would be put in simplest form.
If you mix some table salt into a glass of water, which is the solute and which is the solvent?
Solute: Salt
Solvent: Water
If you it took two pieces of bread and 1 slice of cheese to make a grilled cheese sandwich, what ingredient would be the limiting factor assuming you have 15 pieces of bread and 8 pieces of cheese.
Bread would be the limiting factor
In the reaction 2KClO3 —-> 2KCl +3O2, what mass you would of KClO3 would you need to produce .50 moles of O2
41 grams
Balance the following chemical equation,
_NaOH + _H2SO4 —-> _Na2SO4 + _H2O
2NaOH + 1H2SO4 —-> 1Na2SO4 + 2H2O
What pH do all bases have to be above and all acids have to be below?
7.0
What is the process in which a substance doesn’t melt and instead is able to go from a solid to gas?
Sublimation
What byproducts are always produced in a combustion reaction?
H2O and CO2
What is the total number of lone pairs in a central atom?
1
Which type of bond shares electrons and which type of bond gives away electrons
Covalent bonds share electrons
Ionic bonds give away electrons
What is the chemical formula for carbon monoxide?
CO
What is the most commonly used nomenclature in chemistry?
International Union of Pure and Applied Chemistry (IUPAC)
Does an atom have more electrons or protons
Atoms cannot be charged, hence they have the same amount. Ions can be charged and can have a different amount
In general, on the periodic table, electronegativity increases as you go in what direction?
Increases as you move from left to right across a period and decreases as you move down a group
What element has this electron configuration: 1s²2s¹
Lithium
What is given about every element on the periodic table of elements.
Atomic number, atomic mass, and the chemical symbol. (Not the only correct answer)
True or False, the nucleus in the atom only has protons while the outer ring has only electrons
False, the outer ring does only have electrons however, the nucleus has protons and neutrons
How many grams are in a kilogram?
1,000
Are all nonzero numbers considered significant?
Yes
Is water a compound or element?
Compound
Is mixing sand and water a chemical or physical change?
Physical change
What are the three main types of matter?
Solid, liquid, and gas
Name a chemical property.
Flammability, toxicity, solubility, heat from combustion, radioactivity, types of chemical bonds formed, coordination number, oxidization states, and acidity or basicity. (There are a lot more)
