Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
100
Two gasses are placed in a container that reaches thermal equilibrium of 283 K. Describe the kinetic energy of the gasses.
Both gasses have the same average kinetic energy because they are at the same temperature
100
List three intensive properties
Mass, volume, length
100
Why cannot extensive properties be used to identify a substance?
They do change based on amount so it tells you almost nothing about composition without further study
100
The kinetic energy is constant & potential energy increases
100
100 gram block of copper at 20 ∘C lowered into 100 grams of water at 100 ∘C. Heat will flow from ____ to ______ until it reaches ________?
The water to the copper until thermal equilibrium.
200
Which graph best represents the best thermal equilibrium graph to represent mixing 200mL of 90°C water with 50mL of 20°C water?
C - there is a larger volume of the higher temperature water, the equilibrium temperature will be closer to the higher temperature water.
200
A sample of calcium has a mass of 80 g, how many moles are present?
2 moles ca
200
You are not allowed to eat sugar. You sneak some sugar into your tea. Your parents walk into the room, see the sugar, and ground you. List three things you could have done to avoid being grounded.
Crush the sugar (decrease the particle size)
Heat the water
Stir the tea
200
Now that you have avoided being grounded you get greedy and decide to add more sugar to the drink. How can you dissolve more sugar?
Increase the temperature.
200
100 g of water was heated from 30*C to 80*C. The specific heat of water is 4.18 J/g*C.
20,900 J
300
What are three ways to increase the volume of a balloon.
The number of particles increases
Lower pressure outside balloon
Warm the balloon
300
According to Kinetic molecular theory as temperature increases pressure increases because the particles move _________ colliding with the wall of the container _________ frequently.
Faster, more
300
When a small volume of water is boiled, a large volume of steam is produced. Why?
The molecules are further apart for the steam.
300
List three physical properties
Color, density, state of matter, solubility, melting point.
300
List two chemical properties.
reactivity, combustibility, corrosivity, toxicity
400
What is the volume of a balloon that contains 2 moles of carbon at 3 atm and 400 K?
21.89 L
400
Lithium is a metal that is shiny and malleable. Is this description physical or chemical properties?
Physical