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Chemistry Questions - All Grades

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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.
Grade 5 Matter
Grade 7 Periodic Table and Elements
Periodic means                                     .
  1. happening at regular intervals
  2. happening very rarely
  3. happening frequently
  4. happening three or four times a year
Grade 12 Acids and Bases
Grade 9 Periodic Table and Elements
Vertical columns are called                .
  1. periods
  2. metals
  3. metalloids
  4. groups
  5. non-metals
Grade 4 Matter
Which of the following is a liquid?
  1. ice
  2. milk
  3. snow
  4. uncooked oatmeal
Grade 8 Matter
Because of loosely packed molecules, a liquid                                 .
  1. resists flowing
  2. takes the shape of its container
  3. forms droplets
  4. none of the above
Grade 10 Bonds and Mixing
What type of ion forms when an atom loses electrons?
  1. A positive anion
  2. A negative anion
  3. A positive cation
  4. A negative cation
Grade 6 Thermodynamics
Compared with the Pacific Ocean, a cup of hot chocolate has                                              .
  1. more thermal energy and a higher temperature.
  2. less thermal energy and a higher temperature.
  3. more thermal energy and a lower temperature.
  4. less thermal energy and a lower temperature.
Grade 4 Matter
Which of the following BEST describes a liquid?
  1. Particles slide past each other.
  2. Particles stay near their neighbors.
  3. Particles are arranged in a pattern.
  4. Particles bounce away from each other.
Grade 9 Periodic Table and Elements
Grade 11 Reactions
Based on the Law of Conservation of Mass, we know that the mass of the reactants                                                                            .
  1. always be more than the total mass of the products
  2. always be less than the total mass of the products
  3. sometimes be more and sometimes be less than the total mass of the products
  4. always be equal to the total mass of the products
Grade 11 Atomic Structure
In the Bohr model,                                                            .
  1. the electrons stay in place
  2. the elections travel around the nucleus in an oval orbit
  3. the electrons travel around the nucleus in a circular orbit
  4. the electrons move side to side around the nucleus
  5. none of the above
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