Solutions
Thermochemistry
Gases
kinetics/equil
Nuclear Chemistry
100

The substance that gets dissolved in a solution

solute

100
Reactions that release energy are called __________.
exothermic
100
Describe gases in terms of shape and volume.
No definite shape or volume.
100

in order for a reaction to occur there must be proper geometry & _____

energy

100
A reaction that changes the nucleus of an atom is called a ______ reaction.
Nuclear
200

Increasing temperature increases the solubility of which type of solute?

solid

200
Reactions that proceed without outside energy being added are called _____________.
Spontaneous
200
What theory states that gas particles are spaced far apart, are constantly moving, and have mass?
The kinetic-molecular theory (KMT)
200

What are 2 things that can be done to speed up a chemical reaction?

increase temp, conc. pressure (gases), or surface area (solids)

200
What are the 3 main types of radiation we discussed in class?
alpha, beta, and gamma
300

the most common measure of concentration

molarity

300
A reaction with a positive delta H is a __________ type of reaction.
endothermic
300
1 atm=760mmHg=101.3kPa=______Pa?
101,325Pa
300

What principle states that if a system at equilibrium is subjected to a stress, the equilibrium position will shift to reverse the effects of that stress?

Le Chatelier's Principle

300
The amount of time it takes for 1/2 of a sample to decay?
Half-life
400

What is the molarity of a solution made by dissolving .256mol NaOH to make 230mL solution?

1.1M

400
When potassium chloride reacts with oxygen, potassium chlorate is formed (2KCl + 3O2 --> 2KClO3) What is the heat of the reaction? (H= -436 kJ/mol(KCl) H= -391 kJ/mol (KClO3) H=0 kJ/mol(O2)
90kJ
400
.02 L of a gas is collected at 292K, what volume will it occupy at 312K? (V1T2=V2T1)
.0214L
400

If the temperature is increased on an exothermic reaction, the reaction will shift ____.

left

400
What do you call the splitting of the nucleus of an atom?
Fission
500

How many grams of HCl are needed to make 250mL of .50M solution?

4.6g

500
How much heat is absorbed if 20g of water is heated 10 degrees Celcius? (C=4.18J/g oC) q=m x c x delta T
836J
500
How many moles will occupy 649mL at 23 degrees Celcius and 85.9 kPa? PV=nRT
.0227
500

What effect to catalysts and inhibitors have on equilibrium position?

no shift

500
If the half-life of a nucleus is 10 years, how much of a 10 gram sample will be left after 30 years?
1.25g
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