Intro. to Formula Mass

Multiple Choice

What is the left part of a chemical equation called?

2H₂ + O₂ ---> 2H₂O

• Reactants

• Yields

• Products

Multiple Choice

What is the right part of a chemical equation called?

2H₂ + O₂ ---> 2H₂O

• Reactants

• Yields

• Products

Multiple Choice

What is the little number after an element in a chemical equation called?

Example: H₂

• Coefficient

• Atom

• Subscript

Multiple Choice

What is the number before a chemical formula called?

Example: 2H₂ + O₂ ---> 2H₂O

• Coefficient

• Atom

• Subscript

Multiple Choice

How many atoms of carbon (C) are in C₆H₁₂O₆?

• 3
• 6
• 12
• 24

Multiple Choice

How many atoms of Oxygen are in Fe(NO₃)₃ ?

• 9
• 1

Multiple Choice

How many Hydrogen atoms are in 4H₂O?

• 6

• 8

• 2

• 4

Multiple Choice

How many Magnesium atoms are in 10MgCl₂?

• 10

• 5

Multiple Choice

How many Oxygens are in this molecule? 
(OH)₂

• 4
• 2
• 3

Multiple Choice

Is the following equation balanced?

Al + O₂ ---> 2Al₂O₃

• YES

• NO

To watch and to read!

Link to video

Read the theory on page 10

Fill in the Blank

Find the formula mass of Ca(NO₃)₂

Given Relative Atomic Mass of

Ca = 40

N = 14

O=16

Multiple Choice

What is the formula mass of table salt (NaCl)?

• 116.886

• 35.453

• 22.990

• 58.443

Multiple Choice

What is the formula mass of CO₂?

• 12

• 16

• 32

• 44

Multiple Choice

What is the formula mass of Cl₂?

• 17

• 35.5

• 71.0

• 89

Multiple Choice

Calculate the formula mass of Ba(C₂H₃O₂)₂

• 255.3

• 237.3

• 228.3

• 196.3

Multiple Choice

Calculate the formula mass for Al(OH)₃

• 78.0

• 72

• 28

• 25