Which of the following are not a principle of Particle Theory?
-All matter is made up of particles.
-There are no spaces between particles.
-Particles are always moving.
There are no spaces between particles.......in fact there are always spaces between particles.
100
mass = 45 grams
volume = 45 mL
Determine density.
45 g/mL
100
A glass of water has a mass of 27 grams and a volume of 27 mL. What is the density of the water?
1 g/mL
100
What is Archimedes Principle?
The idea that there is a buoyant force that acts upon objects.
Weight of fluid displaced = force pushing up on object in fluid
100
What is the difference between mass and volume?
Mass is the amount of matter in a substance. Volume is the amount of space that the matter takes up.
200
When food coloring is dropped into a glass of water, it slowly spreads out, even though it is not being stirred. Explain using your knowledge of particle theory.
The food coloring spreads out because particles are always moving and there are spaces between the moving particles.
200
Density = 3 g/mL
Mass = 6 grams
Determine volume
18 mL
200
A piece of glass has a mass of 36.3 g and a volume of 15.1 cm3. What is its density, in mL?
2.4 g/mL
200
What is the density of water?
1 g/mL
200
Name 1 way that you could measure the density of a liquid, using the correct terminology.
Common way from class...
1. Measure the mass of a graduated cylinder without water.
2. Fill the graduated cylinder with a defined volume of water (ex. 25 mL). Record the volume.
3. Measure the mass of the graduated cylinder with the water.
4. D = M/V
300
Food coloring is dropped into two separate glasses of water. The water in one glass is heated, and the other is not. In which glass will the food coloring mix faster? Explain your answer.
The heated one.
300
Density = 56.5 g/mL
Volume = 45.4 mL
Determine volume
2565.1 grams
300
50 ml of liquid has density of 2 g/mL. What is the mass?
100 grams
300
If a 80 g object displaces 30 grams worth of water, what will its weight be in water?
50 grams.
300
How do you measure the volume of a regular solid vs. a irregular solid?
a regular solid can be determined using a ruler and the formula length x width x height. An irregular solid's volume can be determined by water displacement, using either a beaker or an overflow can.
400
What are two types of particles that make up all matter?
Atoms and molecules
400
35.6 mL - volume
4 grams - mass
Determine density.
8.9 g/mL
400
A stone has a mass of 70 grams. When placed in a cylinder containing 40 mL of water, the water rises to 60 mL. Determine the density of the stone.
D = M/V
D = 70/20
D = 3.5 g/mL
400
An object with a volume of 25 mL is completely submerged in a tank of water. If it weight 35 grams above water, what does it weigh in water?
10 grams.
400
A beaker is filled with 26 mL of water. If a block with a volume of 23 cm3 is dropped into the water, what will the new water line be on the beaker?
49 mL
500
When a bicycle tire is taken outside on a cold day, it loses air pressure. Explain why, using your knowledge of particle theory.
The gas particles in the tire begin moving slower, because when there is less heat, there is less energy.
500
Mass = 80 grams
Density = 34.3 g/mL
Determine volume
2.33 mL
500
Lead has a density of 11.3 g/cm3. What should be the volume of 100 grams of lead?
V = M/D
V = 100/11.3
V = 8.84 cm3
500
How much water would a 3 cm x 5 cm x 4 cm cube displace if completely submerged? If it weighed 60 grams in water, what did it weigh in air?
It displaces 60 cm3 of water, which would have a mass of 60 grams. (density of water = 1)
It would weigh 120 grams in air.