Chemical Equations

When writing a chemical equation, reactants are on the _____________ while products are on the _________________.

• top, bottom

• right, left

• left, right

• bottom, top

The amount of atoms on each side of a chemical equation are

• different

• the same

Tags

NGSS.MS-PS1-5

How many Hydrogen (H) and how many Chlorine (Cl) are there?

• H = 4, Cl = 1

• H = 4, Cl = 0

• H = 4, Cl = 3

• H = 4, Cl = 4

Tags

NGSS.MS-PS1-1

Chemical equations

• give directions for naming compounds

• describe only biological changes

• describe chemical reactions

• show how to write formulas

Tags

NGSS.MS-PS1-5

Identify the Reactants in this equation.

• A

• B

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is the compound in the pink box a Reactant or a Product?

• Reactant

• Product

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many atoms of oxygen are represented in the picture?

• 2

• 3

• 5

• 6

An arrow in a chemical equation means the reaction is irreversible.

• True

• False

How many molecules are there?

• 3

• 6

• 12

• 18

Tags

NGSS.MS-PS1-1

Which of the following is true?

• H = 6, So = 4

• H = 3, So = 4

• H = 6, So = 12

• H = 6, So = 2

Tags

NGSS.MS-PS1-1