Counting atoms

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

How many Magnesium atoms are in 10MgCl₂?

• 10

• 5

• 20

Tags

NGSS.MS-PS1-1

How many nitrogen atoms are in (NH₄)₂CrO₄ ?

• 1

• 2

• 8

• 16

Tags

NGSS.MS-PS1-1

How many hydrogen atoms are in 3(NH₄)₂CrO₄ ?

• 4

• 2

• 8

• 24

Tags

NGSS.MS-PS1-1

How many oxygen atoms are in Al₂(SO₄)₃ ?

• 4

• 12

• 7

• 24

Tags

NGSS.MS-PS1-1

2H₂ + O₂ ----> 2H₂O What is the product?

• Hydrogen and Oxygen

• dihydrogen monoxide

• hydrogen dioxide

• Hydrogen, Oxygen, and water

Tags

NGSS.MS-PS1-5

2H₂ + O₂ --------> 2H₂O What are the reactants?

• Dihydrogen monoxide

• Carbon dioxide

• hydrogen and oxygen

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

How many oxygen atoms are found in the following chemical formula: 2Sr₃(PO₄)₂ ?

• 2

• 16

• 8

• 4

Tags

NGSS.MS-PS1-1

How many oxygen atoms are in this chemical formula?

• 6 oxygen atoms
• 2 oxygen atoms
• 3 oxygen atoms
• 4 oxygen atoms

Tags

NGSS.MS-PS1-1