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Ch. 10 Physical and Chemical Changes

Total questions: 35

Worksheet time: 18mins

Name
Class
Date
1.

Which of the following is NOT an example of a physical change?

a)

Chopping a potato

b)

Rust forming on a bike

c)

A snowman melting

d)

Boiling water

2.

The change in an object's volume that occurs when it gets warmer is called:

a)

Thermal expansion

b)

Thermal contraction

c)

Boiling

d)

Evaporating

3.

The change in an object's volume that occurs when heat is removed is called:

a)

Thermal expansion

b)

Thermal contraction

c)

Freezing

d)

Condensing

4.

Which part of a solution is dissolved?

a)

Solvent

b)

Mixture

c)

Solute

d)

Solubility

5.

Which part of a solution dissolves the other substance?

a)

Solvent

b)

Mixture

c)

Solute

d)

Solubility

6.

Which word describes the maximum amount of a substance that can be dissolved in a solvent?

a)

Solvent

b)

Mixture Maximum

c)

Solute

d)

Solubility

7.

Distillation:

a)

Purifies water

b)

Separates liquids

c)

Creates alloys

d)

Increases solubility

8.

Which chemical formula shows one atom of carbon and two atoms of oxygen?

a)

C2O2

b)

C2O

c)

CO2

d)

CO3

9.

The chemical formula for bleach is NaBO3. How many oxygen (O) atoms are there in one molecule of bleach?

a)

1

b)

2

c)

3

d)

4

10.

The chemical formula for salt is NaCl. How many sodium (Na) atoms are there in one molecule of salt?

a)

1

b)

2

c)

3

d)

4

11.

This formula shows the chemical reaction that occurs during a combustion reaction: C3H8 + 5O2 → 4H2O + 3CO2. How many carbon atoms are needed in this reaction?

a)

3

b)

6

c)

8

d)

5

12.

Which will produce a chemical reaction?

a)

Sand into water

b)

Baking soda into vinegar

c)

Pencil into sharpener

d)

Sugar into cinnamon

13.

Which of the following is NOT an example of a chemical change?

a)

Sugar dissolving in water

b)

A burning match

c)

Bleach on a shirt

d)

A precipitate forming

14.

A substance that forms ions when dissolved is a(n):

a)

Alkaline

b)

Acidic

c)

Electrolyte

d)

Neutrality

15.

Which TWO are examples of a physical change?

a)

Chopping

b)

Burning

c)

Melting

d)

Rusting

16.

What is the change of state from solid to gas called?

a)

Transpiration

b)

Evaporation

c)

Sublimation

d)

Thermal contraction

17.

Which of the following is an example of a colloid?

a)

Muddy water

b)

Mayonnaise

c)

Orange juice

d)

A bag of Chex Mix

18.

Which mixture has parts that are evenly distributed throughout?

a)

Heterogeneous

b)

Homogeneous

19.

Which mixture has parts that are NOT evenly distributed throughout?

a)

Heterogeneous

b)

Homogeneous

20.

An ion is an atom or molecule that:

a)

Can combine with other atoms

b)

Has an electric charge

c)

Has no charge

d)

Contains hydrogen

21.

When acids and bases combine they form water and:

a)

Metals

b)

Salts

c)

Sugars

d)

Litmus

22.

A change that changes the form of an object without changing its chemical make up:

a)

Physical change

b)

Chemical change

23.

When things are mixed together but maintain their individual characteristics, a ________ is formed.

a)

Mixture

b)

Combination

c)

Chemical bond

24.

Which of the following is NOT an example of a solution?

a)

Alloy

b)

Sugar water

c)

Carbonated water

d)

Smoke

25.

A solution of a metal with another solid is a(n):

a)

Alloy

b)

Colloid

c)

Compound

d)

Suspension

26.

A combination of two or more elements is a(n):

a)

Compound

b)

Mixture

c)

Suspension

d)

Colloid

27.

A change that occurs when the chemicals combine in a new way.

a)

Physical change

b)

Chemical change

28.

A mixture that has parts that will settle:

a)

Suspension

b)

Colloid

c)

Mixture

d)

Alloy

29.

The chemicals on the left side of a chemical equation.

a)

Reactants

b)

Products

30.

The chemicals on the right side of an equation.

a)

Reactants

b)

Products

31.
  1. Tastes sour
  2. Turns blue litmus red
a)

Acid

b)

Base

32.
  1. Tastes bitter
  2. Turns red litmus blue
a)

Acid

b)

Base

33.

Acid + Base = Salt + Water

a)

Neutralization

b)

Naturalization

c)

Realization

d)

Rationalization

34.

The chemical formula for water is:

a)

H2O

b)

HO2

c)

2HO

d)

HO

35.

The chemical formula for carbon dioxide is:

a)

2CO

b)

C2O

c)

CO2

d)

CO

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