Do now #14- Chemical Equations

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

• Physical
• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many Al atoms are in this compound?         4Al₂O₃

• 2
• 8
• 6
• 4

Tags

NGSS.MS-PS1-1

How many F atoms are in this compound?
6MgF₂ 

• 2
• 6
• 8
• 12

Tags

NGSS.MS-PS1-1

___________________ are the elements are compounds that leave (are formed in) a chemical
reaction.

• Polymers
• Bonds
• Reactants
• Products

Tags

NGSS.MS-PS1-5

Balance the chemical equation.
NaN₃ ---> Na + N₂

• 2NaN₃ ---> 2Na + 2N₂
• 2NaN₃ ---> 2Na + 3N₂
• 2NaN₃ ---> 3Na + 2N₂
• NaN₃ ---> 2Na + N₂

Tags

NGSS.MS-PS1-5

Which part of the chemical equation is the product?
C₆H₁₂O₆ + 6O₂ ---> 6CO₂ + 6H₂O

• C₆H₁₂O₆ + 6O₂ 
• 6CO₂ + 6H₂O

Tags

NGSS.HS-LS1-7

All of the following reactions are correctly balanced except-

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

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

• True
• False

Tags

NGSS.MS-PS1-5

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

• F
• G
• H
• J

Tags

NGSS.MS-PS1-5

A chemical reaction is ___________________.

• when substances undergo changes that result in a new substance
• a characteristic of a substance that can be observed without changing the substance into another substance
• when substances undergo changes that alter their form or physical appearance

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5