Science Final Exam

5 Written Questions

1. A substance made of of two or more elements
2. The bottom of a liquid curve used to measure a liquid in a graduated cylinder.
3. A resource that can be used repeatedly without running out
4. The point on a heating or cooling curve at which a state change is occurring.
5. When a solvent is capable of dissolving more solute at a specific temperature.

5 Matching Questions

1. Mass
2. Saturated
3. Nuclear fusion
4. Evaporation
5. Electron Cloud

1. a The amount of matter in an object.
2. b A process in which two atomic nuclei with low masses are fused into a single nucleus of larger mass; also known as a thermonuclear reaction
3. c The region where electrons are most probably found. It surrounds the nucleus of an atom.
4. d When a solvent has dissolved all the solute it can normally hold at a specific temperature.
5. e Gradual change of a substance from a liquid to a gas at a temperature below its boiling point

5 Multiple Choice Questions

1. Electricity produced by the energy of moving water
   1. Histogram
   2. Density
   3. Hydroelectric
   4. Solute
2. Energy produced by the rise and fall of ocean levels; used to generate electricity
   1. Tidal
   2. KMT
   3. Group
   4. Control
3. A change that produces a new substance; example: burning a piece of paper
   1. Valence
   2. Physical Change
   3. Chemical Change
   4. Thermal Expansion
4. Almost all the mass of an atom is located in this center of an atom; contains protons and neutrons
   1. Plateau
   2. Nucleus
   3. Volume
   4. Solute
5. Resources such as coal, oil, and natural gas which cannot be replaced after they have been used
   1. Renewable
   2. Geothermal
   3. Constant
   4. Nonrenewable

5 True/False Questions

1. Solute → Substance being dissolved in a solvent

   True        False

2. Oxidation Number → A positive or negative number indicating how many electrons an atom has lost, gained, or shared when bonding with other atoms

   True        False

3. Crystal → Thing that remains the same (beaker, amount of water,etc.)

   True        False

4. KMT → All matter is made of up of particles that are in constant motion.

   True        False

5. Filtration → A technique used to separate substances of different densities

   True        False