Measuring Tools
The tool that can be used to measure length
ruler
What would be the appropriate device to measure out a gram of sugar?
Balance (scale)
To find the volume of a small jagged rock, what tool would you need?
Graduated cylinder
Density is the amount of matter per volume.
A cube with a density of 0.6 g/mL
Float
Tool that we use to find mass
Balance (scale)
What unit do our scales use for mass?
grams
The equation to find the volume of a cube
Length x width x height
The equation for density
D = M/V
A rock with a density of 1.2 g/mL
Sink
Metric unit for mass
milligrams, gram, kilograms, etc.
Mass tells us the amount of ____________ in an object.
Matter
A student adds 23 mL to a graduated cylinder, then adds a marble. The water now reads 25 mL. What is the volume of the marble?
2 mL
The density of an object with a mass of 10 g and a volume of 5 cm3
2 g/cm3
A leaf with a density of 0.98 g/mL
Float
The tool that we have used to find the volume of a liquid (or irregular solid)
Graduated cylinder
A graduated cylinder has a mass of 25 g. After adding water, the balance reads 28 g. What is the mass of JUST water?
3 grams
A cube has a side length of 2 cm. What is the volume of the cube?
8 cm3
The density of an object with a mass of 12 g and a volume of 15 mL
0.8 g/mL
A ball with a density of 1.1 g/mL
Sink
The unit of volume on a graduated cylinder
milliliters (mL)
True or False: Light has mass.
True or False: 1 cubic centimeter (cm3) is equal to 1 milliliter (mL)
True. That's why we can use either unit in density calculations.
The density of a cube with a side length of 2 cm and a mass of 16 g.
2 g/cm3
A piece of iron
Sink (density is greater than 1 g/mL)