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Chemistry

Total questions: 62

Worksheet time: 31mins

Name
Class
Date
1.

substances that increases the rate of a chemical reaction without being used up in the process

a)

Catalyst

b)

Electrolyte

c)

Oxidant

d)

Reductant

2.

liquid or gel which contains ions and can be decompsed by electrolysis

a)

Catalyst

b)

Electrolyte

c)

Oxidant

d)

Reductant

3.

causes a gain of electrons and is reduced in a chemical reaction

a)

Catalyst

b)

Electrolyte

c)

Oxidant

d)

Reductant

4.

causes a loss of electrons and is oxidized in a chemical reaction

a)

Catalyst

b)

Electrolyte

c)

Oxidant

d)

Reductant

5.

to gain electrons

a)

To be reduced

b)

To be oxidized

c)

Indicator

6.

to lose electrons

a)

To be reduced

b)

To be oxidized

c)

Indicator

7.

substance that undergoes a distinct observable change when conditions in its solution change

a)

To be reduced

b)

To be oxidized

c)

Indicator

8.

Alkali Metals (+1 charge)

a)

IA

b)

IIA

c)

IIIA

d)

IVA

9.

Alkali earth metals (+2 charge)

a)

IA

b)

IIA

c)

IIIA

d)

IVA

10.

Semi metal and basic metals (+3 charge)

a)

IA

b)

IIA

c)

IIIA

d)

IVA

11.

non metal, semi metal, basic metal (+/-4)

a)

IA

b)

IIA

c)

IIIA

d)

IVA

12.

non metal, semi metal, basic metal (+3)

a)

VA

b)

VIA

c)

VIIA

d)

VIIIA

13.

Chalcogens (-2)

a)

VA

b)

VIA

c)

VIIA

d)

VIIIA

14.

Halogens (-1)

a)

VA

b)

VIA

c)

VIIA

d)

VIIIA

15.

Noble gases (0)

a)

VA

b)

VIA

c)

VIIA

d)

VIIIA

16.

From left to right it increases; From bottom to top it increases

a)

Effective charge, ionization energy, electronegativity and electron  affinity

b)

Atomic radius

c)

Group 2 elements

d)

Ra

e)

Ca

17.

From left to right it decreases; From bottom to top it decreases

a)

Effective charge, ionization energy, electronegativity and electron  affinity

b)

Atomic radius

c)

Group 2 elements

d)

Ra

e)

Ca

18.

They have relatively low electronegativities

a)

Effective charge, ionization energy, electronegativity and electron  affinity

b)

Atomic radius

c)

Group 2 elements

d)

Ra

e)

Ca

19.

has the lowest ionization potential

a)

Effective charge, ionization energy, electronegativity and electron  affinity

b)

Atomic radius

c)

Group 2 elements

d)

Ra

e)

Ca

20.

bigger than Mg

a)

Effective charge, ionization energy, electronegativity and electron  affinity

b)

Atomic radius

c)

Group 2 elements

d)

Ra

e)

Ca

21.

chemical solution in which the solute concentration is lower than its equilibrium solubility

a)

Unsaturated

b)

Saturated

c)

Supersaturated

d)

Diluted

22.

point of maximum concentration, in which no more solute may be dissolved in a solvent

a)

Unsaturated

b)

Saturated

c)

Supersaturated

d)

Diluted

23.

liquid that has a substance added until no more of the substance can be absorbed by the liquid

a)

Unsaturated

b)

Saturated

c)

Supersaturated

d)

Diluted

24.

a solution containing a relatively small amount of solute as compared with the amount of solvent

a)

Unsaturated

b)

Saturated

c)

Supersaturated

d)

Diluted

25.

source of E in times of prolonged hunger and insulate body against loss of heat

a)

Fats

b)

Molarity

c)

Normality

d)

Molality

26.

mol/L

a)

Fats

b)

Molarity

c)

Normality

d)

Molality

27.

# of gram equivalent weights of solute / liter of solution

a)

Fats

b)

Molarity

c)

Normality

d)

Molality

28.

# of mol of solute / liter of solution

a)

Fats

b)

Molarity

c)

Normality

d)

Molality

29.

# of mol of compound / total # moles in system

a)

Mole fraction

b)

Percent composition by mass

c)

Covalent bond

d)

Ionic bond

30.

(mass of solute / mass of solution) x 100

a)

Mole fraction

b)

Percent composition by mass

c)

Covalent bond

d)

Ionic bond

31.

a.      chemical bond that involves sharing of electron pairs between atoms (CH4)

a)

Mole fraction

b)

Percent composition by mass

c)

Covalent bond

d)

Ionic bond

32.

a.      formed through electrostatic attraction between two oppositely charged ions (NaCl)

a)

Mole fraction

b)

Percent composition by mass

c)

Covalent bond

d)

Ionic bond

33.

between metals only

a)

Metallic bonding

b)

Hydrogen bond

c)

Dipole-dipole

d)

London dispersion

34.

A bond with N, O, F

a)

Metallic bonding

b)

Hydrogen bond

c)

Dipole-dipole

d)

London dispersion

35.

force that exists because of interaction of dipoles on polar molecules in close contact

a)

Metallic bonding

b)

Hydrogen bond

c)

Dipole-dipole

d)

London dispersion

36.

dipole-dipole moments

a)

Metallic bonding

b)

Hydrogen bond

c)

Dipole-dipole

d)

London dispersion

37.

made up of molecules of at least two different elements

a)

Compounds

b)

neutralization

c)

Precipitation

d)

Hydrolysis

e)

Ionization

38.

Combination of equivalent amounts of acids and bases

a)

Compounds

b)

neutralization

c)

Precipitation

d)

Hydrolysis

e)

Ionization

39.

product of condensation of atmospheric water vapour that falls under gravity

a)

Compounds

b)

neutralization

c)

Precipitation

d)

Hydrolysis

e)

Ionization

40.

cleavage of chemical bonds by addition of water

a)

Compounds

b)

neutralization

c)

Precipitation

d)

Hydrolysis

e)

Ionization

41.

process by which an atom or molecule acquires a negative or positive charge by gaining or losing electrons

a)

Compounds

b)

neutralization

c)

Precipitation

d)

Hydrolysis

e)

Ionization

42.

energy is a reactant (+H)

a)

Endothermic

b)

Exothermic

c)

Aflatoxin

d)

Ammonia

e)

Urethane

43.

energy is a product (–H)

a)

Endothermic

b)

Exothermic

c)

Aflatoxin

d)

Ammonia

e)

Urethane

44.

naturally occurring mycotoxins that are produced by a species of fungi

a)

Endothermic

b)

Exothermic

c)

Aflatoxin

d)

Ammonia

e)

Urethane

45.

colourless gas with pungent smell

a)

Endothermic

b)

Exothermic

c)

Aflatoxin

d)

Ammonia

e)

Urethane

46.

Colorless or white crystalline compound used in organic synthesis and formerly as palliative treatment for leukemia

a)

Endothermic

b)

Exothermic

c)

Aflatoxin

d)

Ammonia

e)

Urethane

47.

NOT soluble in water

a)

Organic compound

b)

NaNO2

c)

Benzene

d)

Phenolic group

e)

Nitric acid

48.

Soluble in ethanol

a)

Organic compound

b)

NaNO2

c)

Benzene

d)

Phenolic group

e)

Nitric acid

49.

Combustible

a)

Organic compound

b)

NaNO2

c)

Benzene

d)

Phenolic group

e)

Nitric acid

50.

Low melting point (10OC)

a)

Organic compound

b)

NaNO2

c)

Benzene

d)

Phenolic group

e)

Nitric acid

51.

Component of curing salts which preserves meat

a)

Organic compound

b)

NaNO2

c)

Benzene

d)

Phenolic group

e)

Nitric acid

52.

Acts as a color fixative

a)

Organic compound

b)

NaNO2

c)

Benzene

d)

Phenolic group

e)

Nitric acid

53.

Mutagenic effect

a)

Organic compound

b)

NaNO2

c)

Benzene

d)

Phenolic group

e)

Nitric acid

54.

- weakly activating ortho/para directing

a)

Organic compound

b)

NaNO2

c)

Benzene

d)

Phenolic group

e)

Nitric acid

55.

strongly activating ortho/para directing

a)

Organic compound

b)

NaNO2

c)

Benzene

d)

Phenolic group

e)

Nitric acid

56.

deactivating meta directing

a)

Organic compound

b)

NaNO2

c)

Benzene

d)

Phenolic group

e)

Nitric acid

57.

AB + CD -> AC + BD

a)

Substitution

b)

Synthesis

c)

Cracking

d)

Polymerization

e)

Combusion

58.

two or more simple compounds combine to form a more complicated compound

a)

Substitution

b)

Synthesis

c)

Cracking

d)

Polymerization

e)

Combusion

59.

when a compound splits into different products

a)

Substitution

b)

Synthesis

c)

Cracking

d)

Polymerization

e)

Combusion

60.

process of reacting monomer molecules together in a chemical reaction to form a polymer

a)

Substitution

b)

Synthesis

c)

Cracking

d)

Polymerization

e)

Combusion

61.

where oxygen combines with another compound to form water and carbon dioxide

a)

Substitution

b)

Synthesis

c)

Cracking

d)

Polymerization

e)

Combusion

62.

Exothermic reaction because produce heat

a)

Substitution

b)

Synthesis

c)

Cracking

d)

Polymerization

e)

Combusion

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