Mass
Define Mass
the amount of matter in an object
Define Volume
The amount of space that an object takes up. (Big or Small)
Define Density
How much matter an object has in relation to its volume.
How do you calculate the volume of a cube or rectangular prism?
Length x Width x Height
The SI unit of mass is the cubic meter.
cubic meter = volume
mass = gram
What is the instrument/tool we use to find an object's mass?
Triple Beam Balance
What is the instrument/tool that we use to find an object's volume? There are two.
Graduated Cylinder : Liquids and Irregular Solids
Ruler for Cubes, Rec. Prisms, etc.
What is the metric unit you would use to describe an object's density?
or
Grams per Milliliter (liquid)
What is the volume of a cube with 4 cm sides?
4 x 4 x 4
4x4= 16
16x4= 64 cm3
An object’s weight is less on the moon than on Earth. On the moon, the object’s mass decreases.
Mass does not change unless you remove mass. Mass stays the same no matter where you are.
What is the metric unit you would use to describe an object's mass?
Gram
What is the metric unit you would use to describe a LIQUID object's volume?
How do we find the density of an object?
Divide: Mass ÷ Volume
**Answer varies depending on image**
One liter is equal to 100 milliliters.
K H D [ liter ] d c m
1, 0 0 0
What is the term used when we measure mass' relationship with gravity?
Weight
What is the metric unit you would use to describe a SOLID object's volume?
Cubic Meter
(Cubic centimeter = cm3)
Describe how density can affect how an object can float or sink. Rise or fall.
Can you give me an example?
When two objects are combined, the less dense object will typically rise to the top of the object with the greater density.
What is the density of an object that has the mass of 409g and a volume of 100 cm3?
4.09g/cm3 (Lead)
Four measurable properties of matter are mass, volume, density and pressure.
Pressure is not a property of matter. The missing measurable property is WEIGHT.
1 kg = 2.2 lbs
99lb ÷ 2.2 = 45 kg
How do you find the volume of an irregular solid using a graduated cylinder?
You record the water's volume before submerging the object. After the object is fully under water, you record the water displacement level.
After volume in mL (minus) starting volume in mL = Volume of the solid object.
Would an object with a mass of 68g and a volume of 150 cm3 float or sink in water?
It would float. The object's density is .45 g/cm3 and that is less dense than water.
Find the volume and density of a cube with the mass of 250g and 5cm sides.
Will it sink or float in water?
It will sink because it is 2g/cm3
This is twice the density of water (1.00g/cm3)
A balloon filled with CO2 air does not rise as high as a balloon filled with helium. This is because the balloon with helium has less mass.
It is because helium is less dense than carbon dioxide and oxygen.