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Unit 2: Matter Exam Review

Total questions: 40

Worksheet time: 40mins

Name
Class
Date
1.

What is the density of a sample of liquid that has a volume of 125 mL and a mass of 200g?

a)

1.6 g/mL

b)

75 g/mL

c)

16 g/mL

d)

0.625 g/mL

2.

Which of the following is not an example of a physical property?

a)

freezing point

b)

density

c)

reactivity

d)

boiling point

3.

A molecule of water (H2O) is made from _____ combining two hydrogen atoms and one oxygen atom.

a)

physically

b)

ionically

c)

chemically

d)

thermally

4.

Knowing the chemical properties of a substance will tell you how the substance

a)

reacts with other substances

b)

smells

c)

can be broken down into atoms

d)

looks

5.

Which of the following results in a mixture?

a)

digesting food

b)

dissolving salt

c)

burning a log

d)

baking a cake

6.

Which of the following is a physical change?

a)

evaporating

b)

dissolving

c)

bending

d)

all of the above

7.

A substance that cannot be broken down into simpler substances is a(n)

a)

element

b)

compound

c)

mixture

d)

atom

8.

Which of the following is an element?

a)

iron

b)

salt

c)

sand

d)

nylon

9.

Which of the following is an example if a chemical change?

a)

ice melting

b)

a puddle of water evaporating

c)

paint fading

d)

pounding gold into a coin

10.

Which of the following is an example of physical change?

a)

rusting iron

b)

dissolving salt in water

c)

burning wood into charcoal

d)

cooking an egg

11.

Which property of a substance is not affected by physical change?

a)

size

b)

shape

c)

position

d)

reactivity

12.

Which tool is best for separating a mixture of sand and water?

a)

magnet

b)

tweezers

c)

centrifuge

d)

filter

13.

Which of the following is not a physical property of iron?

a)

conductivity

b)

color

c)

melting point

d)

ability to rust

14.

Which of the following is an example of a chemical property?

a)

color

b)

reactivity with oxygen

c)

solubility in water

d)

density

15.

You put a spoonful of salt into 1 liter of water and stir. The resulting liquid is an example of a(n)

a)

pure substance

b)

immiscible mixture

c)

homogeneous mixture

d)

heterogeneous mixture

16.

The different substances in a mixture

a)

combine chemically

b)

keep their properties

c)

cannot be separated

d)

form new molecules

17.

Which of the following is made of at least two different types of atoms?

a)

matter

b)

element

c)

molecule

d)

compound

18.

Which of the following causes a chemical change?

a)

moving

b)

burning

c)

shattering

d)

melting

19.

Which of the following is not a pure substance?

a)

molecule

b)

mixture

c)

compound

d)

element

20.

You put 1 spoonful of salt into 1 liter of water and stir. The resulting liquid is an example of a(n)

a)

immiscible mixture

b)

pure substance

c)

heterogeneous mixture

d)

homogeneous mixture

21.

Helium is used in balloons because it is

a)

a colored gas

b)

reactive with rubber

c)

lighter than air

d)

flammable

22.

A physical property of gold is its

a)

reactivity with powerful acids

b)

nonflammability

c)

density

d)

none of the above

23.

Which of the following is an element?

a)

steel

b)

brass

c)

iron

d)

bronze

24.

Steel has a density of 7.8 g/cm3. What is the mass of a block of steel with a volume of 600.0 cm3?

a)

470 g

b)

4,700 g

c)

77 g

d)

7,700 g

25.

The science of what matter is made of and how it changes is called

a)

engineering

b)

kinetics

c)

chemistry

d)

physics

26.

The smallest unit of an element that maintains the properties of that element is a(n)

a)

atom

b)

substance

c)

molecule

d)

compound

27.

Unlike a mixture, a pure substance has

a)

a specific size

b)

atoms

c)

a fixed composition

d)

molecules

28.

Lead has a density of 11.3 g/cm3 and a mass of 282.5 g. What is its volume?

a)

250 cm3

b)

2.5 cm3

c)

25 cm3

d)

2,500 cm3

29.

A material that can be represented by a chemical formula is

a)

a mixture

b)

a homogeneous solution

c)

a pure substance

d)

an element

30.

A chemical change occurs whenever

a)

substances are mixed

b)

new substances form

c)

objects change shape

d)

hot objects melt

31.

Which of the following is not a potential sign of chemical change?

a)

boiling

b)

change in odor

c)

change in color

d)

fizzing

32.

Which of the following is not a potential sign of chemical change?

a)

evaporation of water

b)

change of color

c)

production of gas

d)

release of gas

33.

The smallest unit of a substance that behaves like the substance is a(n)

a)

molecule

b)

compound

c)

atom

d)

element

34.

Solids, liquids, and gases are three forms of matter that

a)

have mass

b)

are made of atoms

c)

take up space

d)

all of the above

35.

An object's volume can be found by dividing its mass by its

a)

pressure

b)

weight

c)

density

d)

temperature

36.

Matter is defined as anything that

a)

contains kinetic energy

b)

has mass and takes up space

c)

can be weighed

d)

can be seen and touched

37.

The mass of a 20 L sample of gas with a density of 0.04 mg/L is

a)

80 mg

b)

8 mg

c)

0.8 mg

d)

0.08 mg

38.

A chemical property of copper is its

a)

melting point

b)

color

c)

density

d)

reactivity

39.

A group of atoms that acts as a unit is called a(n)

a)

molecule

b)

element

c)

mixture

d)

compound

40.

Chemical changes can affect physical and chemical properties whereas physical changes can affect

a)

chemical properties

b)

physical properties

c)

both chemical and physical properties

d)

none of the above

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