EMEQ and Mixtures

H₂O₂← ?

Subscripts tell us

• the number of molecules

• the number of atoms bonded together of that element

• how many protons

• how many element

Tags

NGSS.MS-PS1-1

→2H₂O

Coefficients tell us

• the number of molecules

• the number of atoms we have

• the number of elements present

• the number protons present

Tags

NGSS.MS-PS1-1

 2H₂O
How many Hydrogen atoms are present?

• 2
• 4
• 1
• 10

Tags

NGSS.MS-PS1-1

2H₂O
How many Oxygen atoms are present?

• 2
• 4
• 1
• 5

Tags

NGSS.MS-PS1-1

2H₂O
How many H₂O molecules are present?

• 1
• 4
• 2
• 8

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Carbon dioxide (CO₂) contains how many atoms of oxygen?

• 0
• 1
• 2
• 3

Tags

NGSS.MS-PS1-1

How many hydrogen atoms are in a molecule of glucose/sugar (C₆H₁₂O₆)?

• 6
• 12
• 18
• 24

Tags

NGSS.MS-PS1-1

How many Elements are in the compound C₂H₈O ?

• 2
• 1
• 3
• 0

Tags

NGSS.MS-PS1-1

How many total atoms are in the compound C₂H₈O ?

• 11
• 2
• 8
• 1

Tags

NGSS.MS-PS1-1

How many Aluminum are in Al₂O₃?

• 3
• 2
• 5

Tags

NGSS.MS-PS1-1