5 Written Questions

1. Body's main energy source, especially in respiration. Sugar is an example.
2. Used to detect cancer tumors.
3. Conducts Electricity when dissolved in water.
4. Natural substances or formed from two natural substances.
5. Soft and extremely reactive like sodium, lithium and potassium.

5 Matching Questions

1. Nuclear Fusion
2. Alkaline Earth Metals
3. Isotope
4. Endothermic
5. Base

1. a Light and soft metals like calcium and magnesium.
2. b Needs constant energy to continue, usually a decrease in temperature.
3. c Protons are a different number than the neutrons.
4. d Nuclei with smaller masses that combine to form one nucleus with a larger mass.
5. e pH value is greater than 7, tastes bitter, turns litmus paper blue, and may be slippery.

5 Multiple Choice Questions

1. Process in which the products keep the process going.
   1. Chain reaction
   2. Radiation
   3. Synthesis reaction
   4. Chemical Reaction
2. Equal numbers of atoms on both sides of the equation.
   1. Chemical Reaction
   2. Balanced equation
   3. Chain reaction
   4. Radiation
3. Do not react naturally with other elements, like argon, neon and xenon.
   1. Base
   2. Nobel gases
   3. Noble gas
   4. Metals
4. Simpler substances are formed.
   1. Chemical Reaction
   2. Chain reaction
   3. Decomposition reaction
   4. Replacement reaction
5. A synthetic organic compound.
   1. Base
   2. Plastic
   3. Acid
   4. Protein

5 True/False Questions

1. Product → Amino acids are combined to make a larger molecule.

   True        False

2. Transition Metals → Soft and extremely reactive like sodium, lithium and potassium.

   True        False

3. Exothermic → Needs constant energy to continue, usually a decrease in temperature.

   True        False

4. Organic compounds → Contain carbon and most of the time they contain hydrogen and oxygen too.

   True        False

5. Physical change → Substance does not change chemically, like sugar water, cutting hair, making trail mix.

   True        False