Chem Chapter 3 Review

This refers to how close the measurement is to the true or accepted value

• estimate
• accuracy
• precision
• mean

What is the base unit for measuring volume?

• liters

• meters

• grams

• seconds

What is the formula for DENSITY?

• D=M*V
• D=M/V
• D=V*M
• D=V/M

What is the mass of 20.0 mL solution if its density is 1.84 g/mL?  

• 10.8 g 
• 21.8 g 
• 10.9 g 
• 36.8 g

The ratio of the mass of a substance to its volume is its:

• density
• buoyancy
• weight
• specific gravity

How would you write 0.0005 in scientific notation?

• 50 x 10⁵
• 5 x 10⁴
• 5 x 10³
• .5 x 10³

Arrange the numbers from least to greatest:
216,000,000 ; 2.2 x 10³ ; 3.1 x 10⁷ ; 310,000

• 2.2 x 10³ ; 310,000; 3.1 x 10⁷ ; 216,000,000
• 310,000 ; 2.2 x 10³ ; 3.1 x 10⁷; 216,000,000
• 3.1 x 10⁷ ; 310,000; 2.2 x 10³; 216,000,000
• 2.2 x 10³ ; 3.1 x 10⁷ ; 310,000 ; 216,000,000

Divide:
(6.9 x 10⁷) / (2.3 x 10^-3)

• 3 x 10¹⁰
• 3 x 10⁴
• 3 x 10^-4
• 3 x 10^-11

What is the simplified form of
(3.25 x 10³)+(7.8 x 10³)

• 11.05 x 10³
• 1.105 x 10⁴
• 1.105 x 10²
• 4.55 x 10³

Convert 250 grams (g) to kilograms (kg).

• 0.25 kg

• 2.5 kg

• 25 kg

• 250 kg