Vocab
Anything that has weight and takes up space.
Matter
A property of matter that measures how well one thing can dissolve in another.
Solubility
When a substance dissolves it doesn’t vanish. What happens?
It changes Form
If a tv has a length of 45 ft3, Height of 20 ft3, width of 12 ft3, and mass of 158g, what is the density of that TV?
68 ft3
Standard of Measurement for a specific object
Unit
Characteristics or attributes.
Properties
To mix in with another substance. For example: when salt is added to water, it forms saltwater.
Dissolve
When a candle burns what state is it starting, and what state is it ending in?
Solid to Liquid to Gas
You have a rock with a volume of 15 cm3 and a mass of 45 g. What is its density?
3.0 g/cm3
What is mass
The overall weight of an object
A property of matter that measures how close together the particles are inside a substance. This can determine things like if something will float or sink.
Density
A property of matter that measures how well something can allow electricity to flow through it.
Conductivity
When we mix 25 gram of sugar into 150 gram of water, what happens to the sugar and what is the new overall mass?
Sugar dissolves and 175 g total mass
You have a different rock with a volume of 30cm3 and a mass of 60g. What is its density?
2.0 g/cm3
What is volume
Measurement of the amount of space an object takes up. Measured in milliliters (ml) or cm3
Sulfur Hexaflouride
A gas that is six times more dense than air. It is heavy for a gas and a balloon filled with it sinks.
Define Gram
A scientific unit of measuring how heavy something is. A US dollar bill weights about 1 gram.
Define “conservation of matter”
The phrase “conservation of matter” describes how the amount of matter stays the same, even if it changes form.
Find the mass of a piece of metal that has a volume of 1.25 m3 and a density of 3.2 kg/m3.
Mass = 3.2 kg/m3 x 1.25 m3
4 g/cm3
A brick of salt measuring 10.0 cm x 10.0 cm x 2.0 cm weighs 433 grams. What is its density?
Step 1: Determine Volume
Volume = length x width x height
Volume = 10.0 cm x 10.0 cm x 2.0 cm
Volume = 200.0 cm3
Step 2: Determine Density
Now you have the mass and the volume, which is all the information you need to calculate density.
Density = Mass/Volume
Density = 433 g/200.0 cm3
Density = 2.165 g/cm3
Answer:
The density of the salt brick is 2.165 g/cm3.
Define Law of Conservation Of Matter
Tells us that the amount of matter stays the same even when a substance changes form.
Define Helium
A gas that has no color or smell and is less dense than air. It is often used to make party balloons float.
If a pot of water is left to boil on the stove, some of the water seems to disappear. Where does it go?
When water is heated it changes form from liquid to gas. The gas then escapes into the air.
A dump truck was pulling out of McDonald's. The overall weight was 745.5 kg/m3 while its density was 42.6 m3. What was the Volume of the truck?
17.5 g/km3
Frank has a paper clip. It has a density of 3.52 g/cm3 and a volume of 5000cm3. What is its mass?
5000 cm3 x 3.52g cm3
17,600 g/cm3