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Unit 3 Chemistry Practice Test

Total questions: 51

Worksheet time: 4mins

Name
Class
Date
1.

Water

a)

Pure Substance

b)

Mixture

2.

Chicken Noodle Soup

a)

Pure Substance

b)

Mixture

3.

Air

a)

Pure Substance

b)

Mixture

4.

Oxygen

a)

Pure Substance

b)

Mixture

5.

Has a definite shape and definite volume.

a)

Solid

b)

Liquid

c)

Gas

6.

Particles have no interactions with each other and move with the highest speed.

a)

solid

b)

liquid

c)

gas

7.

This occurs when a gas changes into a liquid.

a)

freezing

b)

evaporation

c)

condensation

d)

sublimation

8.

This occurs when a solid changes into a liquid.

a)

freezing

b)

melting

c)

boiling

d)

deposition

9.

What type of phase change occurs when a liquid changes into a gas?

a)

freezing

b)

melting

c)

condensation

d)

boiling

10.

A piece of metal has a mass of 60.0 g.

a)

Physical Property

b)

Chemical Property

11.

Metals react with acids to produce hydrogen gas

a)

Physical Property

b)

Chemical Property

12.

Water is clear.

a)

Physical Property

b)

Chemical Property

13.

Dissolving salt in water

a)

Physical Change

b)

Chemical Change

14.

Water changing to steam

a)

Physical Change

b)

Chemical Change

15.

Rusting of iron

a)

Physical Change

b)

Chemical Change

16.
a)

Physical Change

b)

Chemical Change

17.

Which of the following particles is has a positive charge?

a)

protons

b)

electrons

c)

neutrons

18.

Which subatomic particle is NOT in the nucleus?

a)

protons

b)

electrons

c)

neutrons

19.

Which part of the atom identifies the element?

a)

proton

b)

neutron

c)

electron

20.

Which element is pictured?

a)
b)
c)
d)
21.

NaCl

a)

Element

b)

Compound

22.

NO2

a)

Element

b)

Compound

23.

Si

a)

Element

b)

Compound

24.

Who designed the first periodic table?

a)

Henry Mosley

b)

Dmitri Mendeleev

c)

Mrs. Ward

d)

Albert Einstein

25.

How many groups are on the periodic table?

a)

7

b)

9

c)

12

d)

18

26.

How many periods are on the periodic table?

a)

7

b)

9

c)

12

d)

18

27.

These elements are good conductors or electricity and heat.

a)

metals

b)

nonmetals

c)

metalloids

28.

What type of element would Neon (Ne) be classified as?

a)

metal

b)

nonmetal

c)

metalloid

29.

What type of element could be both brittle (breaks easily) and shiny?

a)

metal

b)

nonmetal

c)

metalloid

30.

Which of the following is NOT true about Mg?

a)

classified as a metal

b)

has 12 protons

c)

its chemical name is Magnesium

d)

brittle (not malleable)

31.

Carbon Dioxide (CO2)

a)

Pure Substance

b)

Mixture

32.

Silver (Ag)

a)

Pure Substance

b)

Mixture

33.

Has a definite volume, but its shape will change to the shape of its container.

a)

Solid

b)

Liquid

c)

Gas

34.

This substance's particles are very close and vibrate in place.

a)

solid

b)

liquid

c)

gas

35.

This occurs when a gas changes into a liquid.

a)

freezing

b)

melting

c)

boiling

d)

condensation

36.

What type of phase change occurs when a liquid changes into a gas?

a)

freezing

b)

melting

c)

condensation

d)

vaporization

37.

Sugar is sweet.

a)

Physical Property

b)

Chemical Property

38.

Acids react with bases to form water and salt.

a)

Physical Property

b)

Chemical Property

39.

Melting point

a)

Physical Property

b)

Chemical Property

40.

Healing of a wound

a)

Physical Change

b)

Chemical Change

41.

Water on the road freezing

a)

Physical Change

b)

Chemical Change

42.

Hydrogen and oxygen bonding to form water

a)

Physical Change

b)

Chemical Change

43.

Which of the following is NOT an indicator of chemical change?

a)

color change

b)

production of gas

c)

phase change

d)

immediate release or absorption of heat

44.

Which of the following particles is has a negative charge?

a)

protons

b)

electrons

c)

neutrons

45.

Which subatomic particles are in the nucleus of an atom?

a)

protons and electrons

b)

protons and neutrons

c)

electrons and neutrons

46.

Which element is pictured?

a)
b)
c)
d)
47.

HCl

a)

Element

b)

Compound

48.

F2

a)

Element

b)

Compound

49.

Rb

a)

Element

b)

Compound

50.

These elements are poor conductors or electricity and heat.

a)

metals

b)

nonmetals

c)

metalloids

51.

What type of element would Potassium (K) be classified as?

a)

metal

b)

nonmetal

c)

metalloid

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