Chemical Reactions review

Which of the following factors does NOT affect the rate of a chemical reaction?

• Temperature

• Surface Area

• Color

• Pressure

Tags

NGSS.HS-PS1-5

A catalyst is a chemical added to make the reaction go faster. A catalyst that slows down a reaction is called a ______.

• A) Enzyme

• B) Inhibitor

• C) Reactant

• D) Product

What is a chemical reaction?

• A process that changes substances into different substances

• A process that changes the state of a substance

• A process that involves only physical changes

• A process that does not involve energy changes.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a chemical reaction, the substances that are produced are called ____.

• Reactants

• Products

• Catalysts

• Inhibitors

Tags

NGSS.MS-PS1-5

What do chemical reactions do to substances?

• Preserve

• Change

• Destroy

• Create

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Fill in the blank: Some examples of chemical reactions in everyday life are _______ or rotting.

• Freezing

• Burning

• Melting

• Evaporating

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What indicates that a substance has gone through a chemical reaction?

• Change in color

• Formation of a new substance

• Change in temperature

• Change in shape

Tags

NGSS.MS-PS1-2

Fill in the blank: An example of a chemical reaction is the formation of ______ from iron.

• A) Gold

• B) Silver

• C) Rust

• D) Copper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the chemical equation CH4 + 2O2 → CO2 + 2H2O, what are the products?

• A) CH4 and O2

• B) CO2 and H2O

• C) CH4 and CO2

• D) O2 and H2O

Tags

NGSS.MS-PS1-2

Fill in the blank: In the chemical equation CH4 + 2O2 → CO2 + 2H2O, the reactants are CH4 and ____.

• H2O

• CO2

• O2

• CH4