Chemical Reactions - Assessment

1.

Multiple Choice

30 sec

1 pt

What is the measure of the amount of matter in an object?

Density

Volume

Mass

Weight

2.

Multiple Choice

30 sec

1 pt

A process in which substances interact to form new substances with different chemical properties is called a _________.

Physical Change

Chemical Reaction

Nuclear Reaction

Phase Transition

3.

Multiple Choice

30 sec

1 pt

What is a symbolic representation of a compound showing the types and numbers of atoms present?

Molecular Formula

Chemical Notation

Structural Formula

Chemical Formula

4.

Multiple Choice

30 sec

1 pt

When sodium and chlorine combine to form sodium chloride, sodium chloride is the:

Originator

Reactant

Product

Produce

5.

Multiple Choice

45 sec

1 pt

4 grams of hydrogen and 32 grams of oxygen will combine to form:

36 grams of water

28 grams of hydroxide

32 grams of oxygen

36 grams of deuterium

6.

Multiple Choice

45 sec

1 pt

In a chemical reaction, 4 grams of sodium must combine with how many grams of chlorine to produce 10 grams of table salt?

4 grams

6 grams

8 grams

10 grams

7.

Multiple Choice

15 mins

1 pt

12.67 g of Carbon reacts with 25.33 g of oxygen to produce ______ g of Carbon Dioxide

14

24

38

62

8.

Multiple Choice

15 mins

1 pt

2

3

4

8

9.

Multiple Choice

15 mins

1 pt

2

3

4

8

10.

Multiple Choice

15 mins

1 pt

During a chemical reaction matter cannot be created or destroyed.

True

False

11.

Multiple Choice

5 mins

1 pt

Which of the following models best demonstrates a balanced chemical equation?

F

G

H

J

12.

Multiple Choice

1 min

1 pt

The reactants are on the left side of the chemical equation.

True

False

13.

Multiple Choice

5 mins

1 pt

The Law of Conservation of Mass states

that matter exists in all states and reacts the same

that matter can only be changed into new substances by introducing a catalyst

that matter exists in the same state throughout any chemical change

that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants

14.

Multiple Choice

5 mins

1 pt

How many Al atoms are in this compound? 4Al₂O₃

2

8

6

4

15.

Multiple Choice

2 mins

1 pt

An expression of a chemical reaction using chemical formulas and symbols.

algebraic equation

order of operation

chemical equation

formula

16.

Multiple Choice

20 sec

1 pt

Sodium bicarbonate is a __________________.

Reactant

Product

17.

Multiple Choice

30 sec

1 pt

Which symbol in a chemical equation separates the reactants from the products?

=

→

>

+

18.

Multiple Choice

30 sec

1 pt

30 grams of lead oxide and 15 grams of ammonia react completely to produce solid lead, nitrogen gas, and liquid water. What will be approximate mass of all three products?

10 g

15 g

45 g

450 g

19.

Multiple Choice

45 sec

1 pt

Is this balanced?
Al + O₂ → 2Al₂O₃

Yes

No

20.

Multiple Choice

45 sec

1 pt

What is the left part of a chemical equation called?
H_{2 +}O → H₂O

Reactants

Products

Yields

Chemical Equation

Explore this activity with a free account