Chemical Reactions Review

A shorter way of writing a chemical reaction is a

• Chemical Equation

• Chemical Formula

• Compound

• Element 

These are on the right side of a chemical equation...

• Reactants

• Products

• Precipitates

• Bubbles

Tags

NGSS.MS-PS1-5

Is this equation balanced?

• yes

• no

• Not enough information

Tags

NGSS.MS-PS1-5

In a chemical reaction, bonds are broken and new bonds are formed that create new substances. The bonds that are broken are called what?

• Reactants

• Products

• Atoms

• Catalysts

Tags

NGSS.MS-PS1-1

a copper penny turning greenish after a few years.

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

A larger number found in front of a chemical formula is a(n)

• Element 

• Exponent

• Subscript 

• Coefficient 

Chemical equations/reactions must always show...

• Substances remaining the same

• Change in physical state

• Law of Conservation of Mass

• New elements on each side 

Tags

NGSS.MS-PS1-5

Is this equation balanced?

• yes

• no

• Not enough information

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂ --> 2Al₂ O₃

• 2

• 6

• 1

• 4

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

What is a coefficient?

• The small number on the right of the chemical symbol.

• The large number to the left of a formula.