Chemistry Unit 5.1 significant and measurement quiz

All non-significant zeros _____ significant figures

• are never

• are

Sandwiched zeros ______ significant figures

• are never

• are always

Trailing zeroes are...

• significant figures that are very significant
• irrelevant in measurement
• only used in scientific notation
• Only Significant when a decimal is present

Be able to apply significant figures rules when...

• adding, subtracting, multiplying, or dividing

• adding or subtracting

• multiplying or dividing

Significant figures - Add/Subtract

• round to the fewest number of decimal places

• round to the fewest number of significant figures

Significant figures - Multiply/Divide

• round to the fewest number of significant figures

• round to the nearest number of decimal places

Density Equation:

• v = l*w*h

• d = m/v

• d = density m = mass v = volume

• volume = length times width times height

Volume of a rectangular prism

• volume = length times width times height

• d = density m = mass v = volume

• d = m/v

• v = l*w*h

significant measures - be able to report measurements to the proper place based on the tool provided (always estimate one additional digit) True or False?

• False
• True

Conversion Factors: 1 base unit = 100 cent___

• 1 kilo

• 1 m = 100 cm

• 1 L = 1000 mg

• 1 cm3 = 1 mL