Chem Unit 7 Review Rxns 2025

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

The coefficient in 3 H₂O is

• 6

• 5

• 2

• 3

Tags

NGSS.HS-PS1-7

How many atoms of carbon (C) are in C₆H₁₂O₆?

• 3

• 6

• 12

• 24

Tags

NGSS.MS-PS1-1

How many Hydrogen are in 4 H₂O?

• 6

• 8

• 2

• 4

Tags

NGSS.MS-PS1-1

What is the left part of a chemical equation called?
2H_{2 +} O₂ --> 2H₂O

• Reactants

• Products 

• Yields 

• Chemical Equation 

Tags

NGSS.MS-PS1-1

What is the right part of a chemical equation called...
2H_{2 +} O₂ --> 2H₂O

• Reactants

• Products 

• Yields 

• Chemical Equation 

How many Mn atoms are found in the following compound?

3 Cr(MnO₄)₆

• 3

• 4

• 6

• 18

Tags

NGSS.MS-PS1-1

What is the little number after an element in a chemical equation called.
Example: H₂

• Coefficient 

• Subscript

• Atom

• Equation

Is the following equation balanced?...
Al + O₂ --> 2Al₂O₃

• Yes!

• No!

Tags

NGSS.HS-PS1-7

What is the number before a chemical formula called?
Ex: 2H₂ + O₂ --> 2H₂O

• Coefficient

• Subscript

• Atom

• Equation