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Chemistry Questions - All Grades

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Grade 7 Biochemical Pathways
Grade 6 Matter
Evaporation is when                                                                 .
  1. a substance changes from a liquid into a solid material.
  2. a substance changes from a liquid to a gas (or vapor) naturally.
  3. a substance changes from a gas (or vapor) into a liquid.
Grade 8 Matter
What is a gas?
  1. It has a definite shape and volume.
  2. It has a definite shape, but no definite volume.
  3. It has no definite shape or volume.
  4. It has no definite shape, but a definite volume.
Grade 9 Periodic Table and Elements
An element is a substance that                                              .
  1. exists naturally as a solid, liquid, and gas
  2. cannot be broken down into simpler substances
  3. is above 86 on the periodic table
  4. can be broken down only by chemical means
Grade 6 Matter
What are states of matter?
  1. The temperature at which a liquid boils and becomes a gas.
  2. A law that states that for a fixed amount of gas at a constant temperature, the volume of the gas increases as its pressure decreases and the volume of the gas decreases as its pressure increases.
  3. A term used to describe a physical or chemical change in which energy is given of.
  4. The physical forms in which a substance can exist; includes solid, liquid, gas, and plasma.
Grade 7 Properties of Matter
Grade 7 Solvents, Solutes, and Solubility
Grade 10 Macromolecules
Grade 8 Atomic Structure
Compared to the charge and mass of a proton, an electron has                                   .
  1. the same charge and a smaller mass
  2. the same charge and the same mass
  3. opposite charge and smaller mass
  4. opposite charge and the same mass
Grade 7 Atomic Structure
Neutrons have                   .
  1. no electric charge
  2. positive charges
  3. negative charges
  4. particles
Grade 7 Periodic Table and Elements
Grade 9 Properties of Matter
A chemical change refers to                                                                               .
  1. a change in matter when matter independent changes form.
  2. a change in matter that does not change composition.
  3. a change in matter that leads to melting or evaporation.
  4. a change in matter that occurs when substances combine to form new substances.
Grade 11 Reactions
You know that you have a balanced chemical equation when the                                                                                                          .
  1. coefficients of the reactants equal the coefficients of the products
  2. number of atoms of each element in the reactants equal that of each corresponding element in the products
  3. products and reactants are the same chemicals
  4. subscripts of the reactants equal the subscripts of the products
Grade 6 Matter
What is sublimation?
  1. a substance used in a chemical reaction.
  2. the process by which particles leave a liquid and become a gas.
  3. the process by which a solid changes directly into a gas.
  4. a substance made by a chemical reaction.
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