Matter and Their Interaction Review

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

What is the coefficient in the chemical formula?

• 2

• N

• H

• 3

Tags

NGSS.MS-PS1-5

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

NGSS.MS-PS1-5

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

• H = 3

  O = 3

• H = 9

  O = 9

• H = 3

  O = 9

• H = 3

  O = 1

Tags

NGSS.MS-PS1-1

Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)

• H₃SO₄

• HSO₄

• H₄S₃O

• H₂O

Tags

NGSS.MS-PS1-1

In the equation, 2Mg + O₂ ---> 2MgO, which are the reactants?

• 2Mg and O₂

• 2MgO

• Mg and MgO

• O and MgO

Tags

NGSS.MS-PS1-1

How do you determine the identity of an atom?

• Protons

• Protons + Neutrons

• Neutrons

• Valence Electrons