Matter and Their Interaction Review

The small numbers under and to the right of element symbols in a formula are called _________________.

• element symbols

• exponents

• coefficients

• subscripts

The large numbers before a chemical formula that are used as multipliers are known as __________________.

• element symbols

• exponents

• coefficients

• subscripts

Tags

NGSS.MS-PS1-5

The materials we start with in a reaction are known as __________________ and are found on the left side of a chemical equation.

• chemicals

• reactants

• products

• creations

The materials we end with in a reaction are known as __________________ and they are found on the right side of the chemical equation.

• chemicals

• reactants

• products

• creations

Tags

NGSS.MS-PS1-5

Count the atoms for each element and select the correct answer: KClO₃

• K = 1 Cl = 3 O = 3

• K = 3 Cl = 3 O = 3

• K = 1 Cl = 1 O = 3

• K = 1 C = 1 l = 1 O = 3

Tags

NGSS.MS-PS1-1

What is the coefficient in the chemical formula?

• 2

• N

• H

• 3

Tags

NGSS.MS-PS1-5

What is the subscript in the formula for H?

• 2

• N

• H

• 3

Tags

NGSS.MS-PS1-1

Fe₂O₃ has

• 2 Iron atoms, 3 oxygen atoms
• 6 iron atoms, 6 oxygen atoms
• 3 iron atoms, 2 oxygen atoms
• 1 iron atom, 6 oxygen atoms

Tags

NGSS.MS-PS1-1

How many oxygen atoms are in the following compound 2Al₂(CO₃)₃ 

• 1
• 3
• 6
• 18

Tags

NGSS.MS-PS1-1

Count the atoms for each element and select the correct answer:

• H = 3

  O = 3

• H = 6

  O = 1

• H = 2

  O = 1

• H = 6

  O = 3

Tags

NGSS.MS-PS1-1