How did you find mass in the cube and cylinder activities
Use a balance.
(Or a scale)
100
What is the conversion between mL and cm cubed?
1 mL = 1 cm cubed.
100
What is the density of an object that has a mass of
5.00 grams and a volume of 1.5 mL?
Show the formula circle and the equation.
D = 3.33 grams/mL
100
If you have a graph of Mass Depends on Volume for a material what does the slope tell you?
slope = density
100
You do an experiment where (a) ice melts, (b) the water heats up, and then (c) the water turns into water vapor.
What happens to the temperature when the ice melts? Why?
The temperature remains constant because a phase change is happening. The energy (heat) is breaking the lattice work apart.
200
How do you find the relative mass of 2 objects if all you have is your hands? Why does this work?
Gently lift the objects up and down.
You are testing the inertia.
200
Find the volume if the density = 6.00 g/cm cubed and the mass = 78.0 grams
Show the formula circle and equation.
13 cm cubed
200
State the density of water in 2 different units.
1 g/mL and 1 g/cm cubed
200
If you graph Mass Depends on Volume for two metals on one graph, how can you tell which material is more dense?
The material with the steepest slope (bigger number) has the greatest density.
200
You do an experiment where (a) ice melts, (b) the water heats up, and then (c) the water turns into water vapor.
What happens to the temperature when the water heats up? Why?
When water heats up the temperature increases because the molecules are moving faster.
300
What is the mass if density = 9.00 g/mL and volume =30 mL.
Show circle and equation.
270 grams
300
There are 78.0 mL of water in a graduated cylinder. You drop in a marble. The water level rises to 79.5 mL. What is the volume of the marble?
1.5 mL
300
What happens to the volume of water when it freezes?
What happens to the density of water when it freezes?
The volume increases.
The density decreases.
300
If the slope of a Mass Depends on Volume graph is 4.8 g/cm cubed, what is the density of the material?
4 g/cm cubed
300
You do an experiment where (a) ice melts, (b) the water heats up, and then (c) the water turns into water vapor.
What happens to the temperature when the water is boiling and water turns into water vapor? Why?
When water is boiling the temperature remains constant because there is a phase change.
400
State the Law of Conservation of Mass.
Mass cannot be created or destroyed, it can just be changed from one form to another, but the total amount will never change.
400
You have 50 mL of water with a mass of 50 grams and a density of 1 g/mL. You have 200 mL of oil with a mass of 180 grams and a density of 0.91 g/mL.
a) Which one is heavier?
b) If they are both poured into one container which one sinks? Why?
a) The oil is heavier.
b) The water sinks because it is more dense.
400
Rank the density of the 3 phases of water (water, ice, water vapor) from the least dense to most dense.
water vapor, ice, water
400
A material has a density of 16.0 g/mL, what would be the slope of a Mass depends on Volume graph of this material.
16.0 g/ml
400
You do an experiment where (a) ice melts, (b) the water heats up, and then (c) the water turns into water vapor.
What would happen to the temperature if you captured the water vapor and continued to heat it? Why?
The temperature would increase because the molecules would move faster.
500
If you have a glass of water and drink half of it, have you broken the Law of Conversation of Mass?
Explain why or why not.
No, the law is not broken because the water was not destroyed it just changed systems.
500
List 2 ways you found volume in the activities and the units that result in each.
Measure length, width and height and use formula
V=L * W * H Units are cm cubed.
Use a graduated cylinder and find volume by displacement. Units are mL.
500
Which of the following materials would float in water? Explain why.
a) D = 1.2 g/mL
b) D = 0.87 g/mL
b) D = 0.87 g/mL
It is less dense than water.
500
If you graph Mass Depends on Volume for the following three materials on one graph, which one would be steepest and which would be least steep.
water, steel, oxygen
steel would be steepest and oxygen would be least steep
500
If ice is at 0 degrees Celsius, can it get colder? Why?
Yes, the temperature can decrease because a phase change is not happening.