Chemistry Chapter 2 Review

Which of the following values has 3 significant digits?

• 0.004500

• 4500

• 0.045

• 4.50

Which of the following numbers has three significant figures?

• 1014 miles
• 101 feet
• 1000 yards
• all of the choices

How many significant figures does the following number have: 0.002040

• 6
• 4
• 3
• 2

Round 0.010229 to four significant figures

• 1022
• 1023
• 0.01023
• 0.01022

How many significant figures does the measurement in 10.0 grams have>

• 1
• infinite
• 3
• 2

How many significant figures does the following number have: 1740200

• 4
• 7
• 3
• 5

Calculate 5.50 cm + 5.5 cm and give your answer with the correct number of significant figures.

• 11 cm
• 11.0 cm
• 11.00 cm
• 11.000 cm

Calculate 345.009 g - 23.00 g and give your answer with the correct number of significant figures.

• 322.01 g
• 322 g
• 322.009 g
• 322.0

Calculate 1.23 m x 0.89 m and give your answer with the correct number of significant figures.

• 1.0 m²
• 1.1 m²
• 1.0947 m²
• 1.095 m²

Calculate 923 g ÷ 20312 cm³ and give your answer with the correct number of significant figures.

• 0.04 g/cm³
• 0.045 g/cm³
• 0.0454 g/cm³
• 0.05 g/cm³