Chemistry Semester 2 Review

What does the number ₃ represent in 4NH₃?

• Subscript

• Superscript

• Coefficient

What does the number 4 represent in 4NH₃?

• Subscript

• Superscript

• Coefficient

In the equation shown, what are the reactant(s)?

• N₂ + H₂

• NH₃

Tags

NGSS.HS-PS1-2

In the equation shown, what are the product(s)?

• N₂ + H₂

• NH₃

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Is this equation balanced?

• Yes

• No

Tags

NGSS.HS-PS1-7

Is this equation balanced?

• Yes

• No

Tags

NGSS.HS-PS1-7

To balance an equation you should:

• ONLY change subscripts.

• ONLY change coefficients.

• Change BOTH subscripts and coefficients.

Tags

NGSS.HS-PS1-7

What coefficient should be used to make the following equation balanced?
N₂+O₂--> _NO 

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-7

What law governs the balancing of chemical equations?

• Law of Energy

• Law of Conservation of Matter/Mass

• Law of Gravity

• Law of Matter Movement

Tags

NGSS.HS-PS1-7

Balance this equation

_Al +_HCl --> _H₂ +_AlCl₃

• 2,6,3,2

• it's already balanced

• 4,12,3,4

• 2,1,4,5

Tags

NGSS.HS-PS1-7