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Essay Quiz
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1
What is potential energy?
2
Why is the First Law of Thermodynamics important to biology?
3
What are the five forms of energy? What is meant by an energy level?
4
What is the difference between potential and kinetic energy? Define subatomic particle.
5
Define the term work. Why do chemicals undergo reactions?
6
What is the difference between an atom and an element?
7
What is the difference between a molecule and a compound?
8
On what bases are solids, liquids, and gases differentiated?
9
What relationship does kinetic energy have to the three states of matter?
10
What is the difference between temperature and heat?
11
What is a calorie?
12
How many protons, electrons, and neutrons are in a neutral atom of potassium having an atomic weight of 39? Which phase of matter is composed of molecules that vibrate around a fixed position and are held in place by strong molecular forces?
13
How would two isotopes of oxygen differ? Which phase of matter is composed of molecules that can rotate and roll over each other, because the kinetic energy of the molecules is able to overcome the molecular forces?
14
Define the terms AMU and atomic number. Which phase of matter is composed of atoms or molecules with the greatest amount of kinetic energy?
15
Why are the outermost electrons of an atom important?
16
Name two kinds of chemical bonds that hold atoms together. How do these bonds differ from one another?
17
What is the difference between a polar and a non-polar molecule?
18
What is different about a hydrogen bond in comparison to covalent and ionic bonds?
19
What's the difference between a solute and a solvent?
20
What relationship does kinetic energy have to homogenous solutions?
21
Give an example of an ion exchange reaction.
22
What happens during an oxidation-reduction reaction?
23
Describe the difference between a reactant and a product.
24
What does it mean if a solution has a pH number of 3, 12, 2, 7, or 9?
25
If the pH of a certain solution changes from 8 to 9, what happens to the hydroxide ion concentration?







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