Chemical Formulas and Reactions

CH₂Cu₈ - How many Copper atoms are in this formula?

• 1

• 2

• 8

• 16

Tags

NGSS.MS-PS1-1

How many total atoms are in this formula? 3Zn₂O₃H

• 6

• 9

• 18

Tags

NGSS.MS-PS1-1

How many molecules of this chemical formula are there? 9NaCl₂

• 9

• 2

• 1

• 11

Tags

NGSS.MS-PS1-1

What is the subscript in this formula? 3N₂ONe

• 3

• 2

• 1

• 5

Tags

NGSS.MS-PS1-1

This tells you the number of molecules you have of a substance

• coefficient

• subscript

• exponent

• chemical formula

Tags

NGSS.MS-PS1-1

This tells you how many atoms of an element you have in a chemical formula

• coefficient

• subscript

• chemical symbol

• atomic number

Tags

NGSS.MS-PS1-1

Is this equation balanced?

2H₂O yields H₂ + 2O₂

• Yes

• No

Tags

NGSS.MS-PS1-5

This equation is not balanced. Which element has more atoms on one side than the other?

2HCl + CaCO₃ yields CaCl + H₂O + CO₂

• Cl

• Ca

• H

• O

Tags

NGSS.MS-PS1-5

Is this equation balanced?

C + 2H₂ yields CH₄

• No

• Yes

Tags

NGSS.MS-PS1-5

Is this equation balanced?

CH₄ + O₂ yields CO₂ + 2H₂O

• yes

• no

Tags

NGSS.MS-PS1-5