Quiz about Conservation of Mass

Question 1

Anything that has mass & takes up space

Accepted Answer

matter

Answer

gravity

Answer

force

Answer

volume

Question 2

Measure of the amount of matter

Accepted Answer

mass

Answer

volume

Answer

weight

Answer

density

Question 3

Smallest unit of an element

Accepted Answer

atom

Answer

compound

Answer

molecule

Answer

product

Question 4

Smallest unit of a compound

Accepted Answer

molecule

Answer

atom

Answer

density

Answer

element

Question 5

Substance that cannot be broken into simpler substances

Accepted Answer

element

Answer

molecule

Answer

gram

Answer

proton

Question 6

Substance made up of chemically combined elements

Accepted Answer

compound

Answer

atom

Answer

element

Answer

electron

Question 7

Number placed in front of a chemical formula

Accepted Answer

coefficient

Answer

product

Answer

reactant

Answer

subscript

Question 8

Number written below & to the right of a chemical symbol

Accepted Answer

subscript

Answer

reactant

Answer

product

Answer

coefficient

Question 9

Substances that form as the result of a chemical reaction

Accepted Answer

products

Answer

reactants

Answer

coefficients

Answer

subscripts

Question 10

Substances present at the start of a chemical reaction

Accepted Answer

reactants

Answer

subscripts

Answer

coefficients

Answer

products

Question 11

How many oxygen atoms are in the products for the chemical reaction below?
$$4Fe\ +\ 3O_{2\ }\rightarrow\ 2Fe_2O_3$$

Accepted Answer

6

Answer

2

Answer

3

Answer

5

Question 12

The Law of Conservation of Mass says that matter can neither be __________ or __________.

Accepted Answer

created; destroyed

Answer

recycled; renewed

Answer

subtracted; added

Answer

joined; separated

Question 13

How many atoms are in the products below?
$$4Fe\ +3O_{2\ }\rightarrow\ 2Fe_2O_3$$

Accepted Answer

10

Answer

7

Answer

17

Answer

20

Question 14

According to the Law of Conservation of Mass, what happens to the wood and oxygen when it is burned?

Accepted Answer

The atoms in the wood and oxygen rearrange and form smoke and ash.

Answer

The wood disappears.

Answer

It stays the same chemically.

Answer

Nothing.

Question 15

A 55-gram egg is placed in a pot. After the egg is boiled, which is most likely the mass of the egg?

Accepted Answer

55

Answer

50

Question 16

In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have?

Accepted Answer

4g

Answer

5g

Answer

9g

Answer

14g

Question 17

Is this equation balanced or unbalanced?
H₂ + O₂ --> H₂O

Accepted Answer

unbalanced

Answer

balanced

Question 18

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

Accepted Answer

Product

Answer

Originator

Answer

Reactant

Answer

Produce

Question 19

Jason poured 500 grams of water into a container and tightly sealed it. The water was allowed to freeze. Which is most likely true about the ice that formed?

Accepted Answer

The mass of the ice is the same as the mass of the water.

Answer

The mass of the ice is greater than the mass of the water.

Answer

The ice formed is a different substance than the water.

Answer

The ice formed is the same temperature as the water.

Question 20

Anthony is performing an experiment. He adds 0.25 grams of baking soda to 5 grams of water and stirs. Anthony watches as the baking soda dissolves in the water. If Anthony weighs the water and baking soda solution, what will its mass be?

Accepted Answer

5.25 grams

Answer

4.75 grams

Answer

5.0 grams

Answer

7.5 grams

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