IC2 Chemical Equations

Which of the following models best demonstrates a balanced chemical equation?

• F

• G

• H

• J

Tags

NGSS.HS-PS1-7

Which of these formulas contain equal numbers of nitrogen atoms?

• Formulas I and V

• Formulas I and IV

• Formulas II and III

• Formulas III, and IV

The reactants are on the left side of the chemical equation.

• True
• False

All of the following reactions are correctly balanced except-

• A
• B
• C
• D

Tags

NGSS.HS-PS1-7

In a ___________change, a substance changes into a different substance.

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The Law of Conservation of Mass states

• that matter exists in all states and reacts the same

• that matter can only be changed into new substances by introducing a catalyst

• that matter exists in the same state throughout any chemical change

• that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants

Tags

NGSS.HS-PS1-7

How many Al atoms are in this coefficient and compound ? 4Al₂O₃

• 2

• 8

• 6

• 4

Tags

NGSS.MS-PS1-1

How many F atoms are in this coefficient and compound?

6MgF₂

• 2

• 6

• 8

• 12

What are the PRODUCTS of the chemical reaction pictured?

• CH₄ and CO₂
• CH₄ and O₂
• CO₂ and H₂O
• O₂ and H₂O

Tags

NGSS.HS-PS1-7

Two Reactants and One Product

• Decomposition
• Combination
• Combustion
• Single Replacement