7th Grade Physical Sci- Balancing and Naming Chemicals

 

In order for an equation to be balanced, there must be ...

• equal amounts of each type of atom on both sides

• more products than reactants

• more reactants than products

• equal amounts of molecules on both sides

Tags

NGSS.MS-PS1-5

WHAT IS THE FORMULA FOR GOLD(III) CHLORIDE?

• AuCl

• AuCl₃

• AuClO₃

• AuClO

WHAT'S THE NAME FOR P₂O₄?

• PHOSPHORUS OXIDE

• PHOSPHORUS (II) OXIDE

• DIPHOSPHORUS TETROXIDE

• DIPHOSPHORUS TETROXYGEN

Tags

NGSS.MS-PS1-1

Balance this equation:

H₂ + Cl₂ ---> HCl

• It is balanced.

• H₂ + Cl₂ ---> 2HCl

• 3H₂ + Cl₂ ---> 6HCl

• H₂ + 3Cl₂ ---> 6HCl

Tags

NGSS.MS-PS1-5

Which of the following equations are correctly balanced?

• 12CO₂ + H₂O -> C₆H₁₂O₆ + O₂

• CO₂ + H₂O ---> 3C₆H₁₂O₆ + O₂

• CO₂ + 9H₂O --> C₆H₁₂O₆ + O₂

• 6CO₂ + 6H₂O -> C₆H₁₂O₆ + 6O₂

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What coefficient needs to go in front of silver (Ag) on the products side to finish balancing this equation?

2Ag₂O → __Ag + O₂

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

What is wrong with how this student balanced the equation?

Original equation: Ag + O_{2 --->} Ag₂O

Solution: Ag + O_{2 --->} 2Ag₂O

• They changed the molecular structure of the products/reactants.

• The silver (Ag) still isn't balanced.

• The oxygen (O) still isn't balanced.

• They left out the reactants.

Tags

NGSS.MS-PS1-5

What's unbalanced about this equation? 

Al + O₂ --> Al₂O₃

• Oxygen only

• Aluminum only

• Both oxygen and aluminum

• Nothing; it is balanced

Tags

NGSS.MS-PS1-5

WHAT IS THE FORMULA FOR CARBON TETRACHLORIDE?

• C₄Cl₃

• CCl₄

• CClO₄

• CC₄

Tags

NGSS.MS-PS1-1

WHAT IS THE FORMULA FOR LITHIUM OXIDE?

• LiO₂

• Li₂O

• Li₂O₃

• LiO

Tags

NGSS.MS-PS1-1