Unit 4 Exam Review

Which is NOT one of the 5 types of reactions we learned about?

• Combination

• Single Replacement

• Double Replacement

• Elementary

What type of reaction is the following chemical reaction?

• Double Replacement

• Single Replacement

• Combustion

• Combination

Predict the products of the following chemical equation.

What is the molar mass of HF?

• 14 g/mol

• 20 g/mol

• 502 g/mol

• 10 g/mol

• 1%

• 89%

• 71%

• 2%

How many significant figures does the number 465,900 have?

• 5

• 6

• 4

• 3

How many significant figures does the number 4.580 have?

• 4

• 3

• 2

• 1

Put 465,900 into scientific notation.

• 0.00078

• 0.00078

• 78000

• 780000