Unit 3

How many Hydrogen are in 4H₂O?

• 6
• 8
• 2
• 4

How many Oxygen are in H₂O?

• 1
• 2
• 0
• 4

How many Magnesium are in 10MgCl₂?

• 10
• 5
• 20

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

• ------>
• 2H₂O
• 2H₂+ O₂

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

• ----->
• 2H₂O
• 2H₂ +O₂

How many O's are in Al₂(SO₄)₃

• 4
• 12
• 7
• 24

How many atoms are there TOTAL in:
H₂SO₄

• 6
• 5
• 7
• 3

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

How many Sodium (Na) are in 6NaCl?

• 1
• 12
• 6

A subscript is the small number below a(n) ________ that tells the number of _______ of that element.

• element symbol; atoms
• atom; element symbol
• subscript; protons
• compound; elements