DOL - 7/6 (b) - STAAR Review - 3/19

2 CH₂CO₃OH

Number of C: ​ (a)  

Number of H: ​ (b)  

Number of O: ​ (c)  

• 4
• 6
• 8
• 2
• 3
• 1
• 5
• 7
• 9
• 10

Tags

NGSS.MS-PS1-1

Match the element to the number of atoms it has.

2 Al(C₂H₃O₄)₂

• 12

• hydrogen

• 8

• aluminum

• 16

• oxygen

• 2

• carbon

Tags

NGSS.MS-PS1-1

How many Hydrogen are in 4H₂O?

• 6
• 8
• 2
• 4

Tags

NGSS.MS-PS1-1

How many Oxygen are in H₂O?

• 1
• 2
• 0
• 4

Tags

NGSS.MS-PS1-1

• Element

• Compound

Tags

NGSS.MS-PS1-1

Coefficients in chemical formulas...

• are found at the beginning of a formula and multiply just the first atom

• are found at the end of a formula and multiply EVERYTHING!

• are found at the end of a formula and multiply only elements inside the parentheses.

• are found at the beginning of a formula and multiply EVERYTHING!

How many O's are in Al₂(SO₄)₃

• 4
• 12
• 7
• 24

Tags

NGSS.MS-PS1-1