Quiz about Matter and Chemical Reactions

Question 1

Chemical or Physical:

A characteristic of matter that can be observed or measured with your 5 senses is a ____________ property.

Accepted Answer

Physical

Answer

Chemical

Question 2

Chemical or Physical:

The words "blue", "large", and "soft" all describe __________ properties.

Accepted Answer

Physical

Answer

Chemical

Question 3

Chemical or Physical:

______________ properties include how a substance reacts with other substances.

Accepted Answer

Chemical

Answer

Physical

Question 4

Chemical or Physical:

The ability to cook, burn, rust, tarnish, or explode is an example of a ___________ property.

Accepted Answer

Chemical

Answer

Physical

Question 5

What is a sign of a physical change?

Accepted Answer

change in state of matter

Answer

odor produced

Answer

light

Answer

temperature change

Question 6

Which of the following IS a physical change?

Accepted Answer

Getting a haircut

Answer

Rusty metal

Answer

sour milk

Answer

A compound

Question 7

What is the best definition of a chemical change?

Accepted Answer

A change in the state of matter in which the material changes into an entirely different material with properties that are different from the original material.

Answer

A change in the state of matter in which the form changes but the properties stay the same.

Answer

A change in the state of matter in which the material is still the same just in a different form.

Question 8

a copper penny turning greenish after a few years.

Accepted Answer

Chemical Change

Answer

Physical Change

Question 9

In a chemical reaction...

Accepted Answer

The atoms of the reactants unbond, rearrange, and then rebond to form the products

Answer

The atoms of the reactants always stay together to form the products

Answer

New atoms are formed which combine to make the products

Answer

Some atoms disappear while others multiply to form the products

Question 10

Which of the following 2 are chemical reactions?

Accepted Answer

burning wood

Accepted Answer

mixing baking soda and vinegar

Answer

sugar dissolving in water

Answer

water turning into steam

Answer

tearing paper

Question 11

The substances that undergo change by having bonds broken down on the left side of a chemical reaction are the...?

Accepted Answer

Reactants

Answer

Products

Answer

Atoms

Answer

Catalysts

Question 12

The substances produced by having bonds created on the right side of a chemical reaction are the...?

Accepted Answer

Products

Answer

Reactants

Answer

Atoms

Answer

Catalysts

Question 13

The Law of Conservation of Mass states

Accepted Answer

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

Answer

that matter exists in all states and reacts the same

Answer

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

Answer

that matter exists in the same state throughout any chemical change

Question 14

Which is the correct atom count for each the reactant and product side of the chemical equation?

CH₄ + 2 O₂ -> CO₂ + 2 H2O

Accepted Answer

C=1H=4O=4

Answer

C=4H=4O=4

Answer

C=1H=4O=2

Answer

C=1H=4O=2

Question 15

What does it mean for a reaction to be exothermic? Choose 2 of the following.

Accepted Answer

When two substances react, the temperature of the mixture increases.

Accepted Answer

There is less energy going into the reactant to break the bond than there is energy leaving the product.

Answer

When two substances react, the temperature of the mixture decreases.

Answer

There is more energy going into the reactant to break the bond than there is energy leaving the product.

Answer

The amount of energy entering and leaving is the same.

Question 16

What does it mean for a reaction to be endothermic? Choose 2 of the following.

Accepted Answer

When two substances react, the temperature of the mixture decreases.

Accepted Answer

There is more energy going into the reactant to break the bond than there is energy leaving the product.

Answer

When two substances react, the temperature of the mixture increases.

Answer

There is less energy going into the reactant to break the bond than there is energy leaving the product.

Answer

The amount of energy entering and leaving is the same.

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