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definition Flashcards

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1
Q

period

A

horizontal rows of the periodic table of elements

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2
Q

groups

A

a column in the periodic table of elements

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3
Q

Ionic bonds

A

Positively charged ions are formed when a metal atom donates its valence electrons in order to achieve a stable octet or duplet electron arrangements

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4
Q

covalent bonds

A

Non-metal element atom combines together by sharing electrons in order to achieve a stable duplet or octet electron arrangements

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5
Q

hydrogen bonds

A

Attractions forces between hydrogen atoms that have bonded W an atom of high electronegativity

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6
Q

dative bond//coordinate bond

A

The type of covalent bond where the electron pair that shares comes from one atom only

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7
Q

metallic bond

A

electrostatic force of attraction between sea of electrons and the positively charged metal ion

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8
Q

delocalised electrons

A

Electrons that move freely and are not owned by any atom or ion

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9
Q

Standard electrode potential value

A

Potential diff produced when an equilibrium is established between metal and aqueous solution containing metal ion

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10
Q

electrolytes

A

Substance that can conduct electricity in an aqueous solution or molten state but not in solid state
Undergoes chemical changes when electricity passed

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11
Q

Non-electrolyte

A

Consists of molecules
Do not have free movingbioje

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12
Q

Melting point

A

The temperature at which a solid change into a liquid at the particular pressure

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13
Q

Freezing point

A

What’s the temperature at which a liquid change into a solid at the particular pressure

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14
Q

Super cooling

A

A condition in which the temperature of a cooling liquid drop below its normal freezing point without the appearance of a solid

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15
Q

Nucleon number

A

The total number of proton and neutron in the nucleus of an atom

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16
Q

Isotopes

A

Atoms of the same elements I have the same proton number but different nucleon number

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17
Q

Relative atomic mass

A

Element is the average month of an atom of the element when compared to 1/12 of the mass of an atom of carbon C-12

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18
Q

Empirical formula

A

A chemical formula that shows the simplest whole number ratio of atom of each element in the compound

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19
Q

Empirical formula

A

A chemical formula that shows the simplest whole number ratio of atom of each element in the compound

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20
Q

Molecular formula

A

A chemical formula that shows the actual number of an atom of element that combines to form the compound

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21
Q

Hydrogen bone

A

Attraction force between hydrogen atom that has bonded with an atom of a high electron negativity

22
Q

Hydrogen bone

A

Attraction force between hydrogen atom that has bonded with an atom of a high electron negativity

23
Q

dative Bond

A

A type of covalent bond with electron pair that is share comes from one atom only

24
Q

Basicity

A

The number of moles of hydrogen ion that can be produced by one mole of acid when ionized in water

25
Q

Basicity

A

The number of moles of hydrogen ion that can be produced by one mole of acid when ionized in water

26
Q

Acid

A

A chemical substander ionized in water to produce hydrogen ion

27
Q

Acid

A

A chemical substander ionized in water to produce hydrogen ion

28
Q

Base

A

Chemical substand that react with acid to form salt and water only

29
Q

Base

A

Chemical substand that react with acid to form salt and water only

30
Q

Alkali

A

Chemical substander analyzing water to produce hydroxide ion

31
Q

End point of neutralization

A

The poem at which the acid and that completely naturalized the alkali

32
Q

Salt

A

An ionic compound form when the hydrogen ion from an acid is replaced by a metal iron

33
Q

Rate of reaction

A

The change in the amount of reactant of product per unit time

34
Q

Average rate of reaction

A

The rate of reaction over an interval time

35
Q

Redox reaction

A

Chemical reaction in which oxidation and reduction occurs at the same time

36
Q

Instantaneous rate of reaction

A

The rate of reaction and specific time

37
Q

Alloy

A

Mixture of two or more elements with a certain fixed composition in which the major component is metal

38
Q

Oxidizing agent

A

Substand the iodized other substance and is reduced in a redox reaction

39
Q

Reducing agent

A

Substance that reduce other substance and its oxidized in a redox reaction

40
Q

Electrolysis

A

A process whereby compound in molten state or an aqueous solution decompose into the constituent element by passing electricity through them

41
Q

Electrolyte

A

Substance that can conduct electricity in a aqueous solution or molten state but not in solid state and undergoes chemical change

42
Q

Non-electrolyte

A

Substance that cannot conduct electricity in all states

43
Q

Corrosion of metal

A

Redox reaction where the metal is I oxidized exp spontaneously when the metal atom release electron to form metal ion

44
Q

Hydrocarbon

A

Organic compound containing only hydrogen and carbon

45
Q

Non-hydrocarbon

A

Compound containing carbon and hydrogen and other elements such as oxygen nitrogen phosphorus or halogen

46
Q

Saturated hydrocarbon

A

Containing only single Bond between carbon atom

47
Q

Unsaturated hydrocarbon

A

Hydrocarbon containing at least one double bond or triple Bond between carbon at them

48
Q

Isomerism

A

A phenomenon where a compound has the same molecular formula but with two or more difference structural formula

49
Q

Isomer

A

Molecule that have the same molecular formula but different structural formula

50
Q

Isomer

A

Molecule that have the same molecular formula but different structural formula

51
Q

melting point

A

Temperature when the substance turn from solid to liquid at a certain pressure

chem 5 (4 decks)

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