Unit 1 Review Measurements CP Chemistry

Put this number in proper scientific notation: 3600

Put this number in proper scientific notation: 0.00075

The amount of space taken up by an object is

• mass

• weight

• volume

• density

The amount of matter contained within an object

• mass

• weight

• volume

• density

Put this number in proper scientific notation: 314

Answer explanation

To go from scientific notation to standard notation, we need to get the exponent back to 0. In this case, the exponent gets smaller by 4 to get there, so the decimal moves to make the coefficient 4 steps bigger

Answer explanation

To go from scientific notation to standard notation, we need to get the exponent back to 0. In this case, the exponent gets bigger by 2 to get there, so the decimal moves to make the coefficient 2 steps smaller

Which of these is the SI unit for mass?

• meter

• kilogram

• Kelvin

• ampere

• candela

Answer explanation

notice it is kilogram and not gram

There are 7 SI units

length = meter

mass = kilogram

time = second

current = ampere

amount = mole

temperature = Kelvin

luminous intensity = candela

Which of these is the SI unit for luminous intensity?

• meter

• kilogram

• Kelvin

• ampere

• candela

Answer explanation

candella sound like candle

There are 7 SI units

length = meter

mass = kilogram

time = second

current = ampere

amount = mole

temperature = Kelvin

luminous intensity = candela

Answer explanation

To go from scientific notation to standard notation, we need to get the exponent back to 0. In this case, the exponent gets smaller by 5 to get there, so the decimal moves to make the coefficient 5 steps bigger