Balancing Equations & Types of Reactions Review

This equation is........?

• Balanced

• Not balanced

Tags

NGSS.HS-PS1-7

This equation follows the Law of Conservation of Mass?

• True

• False

Tags

NGSS.HS-PS1-7

How many total atoms are in Al₂(SO₄)₃ ?

• 3

• 17

• 15

• 7

Classify the type of reaction:

• Synthesis

• Decomposition

• Single Replacement

• Double Replacement

Classify the type of reaction:

• Synthesis

• Combustion

• Single Replacement

• Decomposition

What is Avogadro's number?

• 16.94 

• 6.02 x10²³

• 1 mole

• 1.063 x 10⁹

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-5

The unbalanced chemical equation below represents a double replacement reaction.

              FeCl₂ +       Na₂CO₃ →       FeCO₃ +      NaCl

When the equation is correctly balanced using the smallest whole numbers, what is the coefficient of NaCl?

• 2

• 3

• 4

• 6

What number from the periodic table in used to calculate the formula mass?

• atomic number

• atomic mass

• period number

• group number

Which equation shows conservation, equal on both side, of atoms?

• 2 H₂ + O₂ → 2 H₂O

• H₂ + O₂ → 2 H₂O

• H₂ + O₂ → H₂O

• 2 H₂ + 2 O₂ → 2 H₂O

Tags

NGSS.HS-PS1-7

When the equation

              NH₃ +       O₂ →       HNO₃ +       H₂O

is completely balanced using the smallest whole numbers, what will be the coefficient of O₂?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-7