Properties and Changes in Matter
Energy and States of Matter
Thermodynamics
Pure Substances and Mixtures
Atomic Structure
100
List two chemical properties.
reactivity, combustibility, corrosivity, toxicity
100
Describe the change that occurs between points B → C.
The kinetic energy is constant & potential energy increases
100
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.
100
2 L of a 6 M solution of NaOH is made with how many moles?
12 mol
100
Which sample would contain more atoms: 12g of C or 12g of Mg? Why?
12g of C, Carbon atoms have less mass ∴ 12g of each, the smaller atom sample will contain a greater number of atoms.
200
List three physical properties.
Color, density, state of matter, solubility, melting point.
200
What is the volume of a balloon that contains 2 moles of carbon at 3 atm and 400 K?
21.89 L
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
200
66.7 mL of 18.0 molar sulfuric acid solution was dissolved in enough water to make 500 mL of solution. The molarity of the diluted mixture is
2.40 molar
200
What scientist discovered the Nucleus of the atom?
Ernest Rutherford
300
List three intensive properties
Color, density, reactivity
300
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
300
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.
300
An iron nail is suspended on a thin wire in a sealed jar of moist air. The surface of the nail becomes red over time. What chemical change has occurred?
Oxidation
400
List three extensive properties.
Mass, volume, length
400
According to Kinetic molecular theory as temperature increases pressure increases because the particles move _________ colliding with the wall of the container _________ frequently.
Faster, more
400
Water has density of 1. What should be the unit?
g/mL
400
Which of the following would increase the rate of solvation the most?
- Increase the temperature and decrease agitation
- Increased agitation and increase particle size
- Decrease particle size and increase temperature
- Decrease temperature and increase agitation
Decrease particle size and increase temperature
500
Lithium is a metal that is shiny and malleable. Is this physical or chemical properties?
Physical
500
According to the kinetic theory of gasses, the average kinetic energy of a gas particles in a gas sample is directly proportional to the ____________
Temperature
500
A sample of calcium has a mass of 80 g, how many moles are present?
2 moles ca
500
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