Chemistry Test

6 Written Questions

1. a "small" number written to the right of a chemical symbol in a formula
2. way of writing the name of a compound using chemical symbols
3. particles inside an atom (protons, neutrons, electrons)
4. the central core of an atom that contains protons and neutrons
5. a chemical substance that is present at the start of a chemical reaction
6. the electrons that are the farthest away from the nucleus of an atom and involved in chemical reactions

6 Multiple Choice Questions

1. a substance made up of two or more elements joined by chemical bonds
   1. Matter
   2. Yield
   3. Proton
   4. Compound
2. the law that states that mass cannot be created or destroyed in ordinary chemical and physical changes
   1. Law of Conservation of Mass
   2. Chemical Equation
   3. Subatomic Particles
   4. Valence Electron
3. a subatomic particle that has no charge and that is found in the nucleus of an atom
   1. Reactant
   2. Proton
   3. Electron
   4. Neutron
4. the "big" number in front of a chemical formula that shows the number of molecules of a compound
   1. Coefficient
   2. Reactant
   3. Neutron
   4. Compound
5. a chemical substance formed as a result of a chemical reaction
   1. Proton
   2. Reactant
   3. Neutron
   4. Product
6. The arrow in a chemical equation that points to the product
   1. Proton
   2. Yield
   3. Mass
   4. Nucleus

6 True/False Questions

1. Electron → negatively charged particle; located outside the atomic nucleus

   True        False

2. Chemical Equation → way of writing the name of a compound using chemical symbols

   True        False

3. Mass → The substance that all physical properties are composed of

   True        False

4. Matter → Amount of matter in an object

   True        False

5. Electron cloud → the system of electrons surrounding the nucleus of an atom

   True        False

6. Proton → a subatomic particle that has a positive charge and that is found in the nucleus of an atom

   True        False