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Grade 11 Periodic Table and Elements
College Properties of Matter
A change in a substance's chemical composition is a:
  1. natural change
  2. chemical change
  3. chemical mixture
  4. chemical synthesis
Grade 11 Reactions
Which statement correctly defines an exothermic reaction?
  1. A chemical reaction with evolution of heat
  2. A chemical reaction with absorption of heat
  3. A chemical reaction with no change in internal energy
  4. A chemical chemical with no change in temperature
Grade 11 Bonds and Mixing
To draw Lewis diagrams, you need to do draw                                          .
  1. The chemical symbol and core electrons
  2. The chemical symbol only
  3. The chemical symbol and valence electrons
  4. The chemical symbol and all electrons
Grade 4 Geomorphology
What are the two types of weathering?
  1. chemical and specific
  2. physical and connective
  3. chemical and physical
Grade 8 Energy and Momentum
Grade 8 Energy and Momentum
Which of these BEST describes the energy transformations in a coal-fired power plant?
  1. Mechanical to Chemical to Electrical to Thermal
  2. Electrical to Chemical to Mechanical to Thermal
  3. Thermal to Chemical to Electrical to Mechanical
  4. Chemical to Thermal to Mechanical to Electrical
Grade 8 Physics
A burning candle changes                                           .
  1. chemical energy into nuclear energy
  2. thermal energy into chemical energy
  3. chemical energy into light and heat energy
  4. chemical energy into mechanical energy
Grade 12 Biochemical Pathways
Grade 6 Energy and Momentum
What is the energy transformation of a flashlight?
  1. thermal to electrical to light
  2. light to chemical to electrical
  3. chemical to light to electrical
  4. chemical to electrical to light
Grade 5 Properties of Matter
Mixing lemonade mix into water is a
  1. chemical change.
  2. reaction.
  3. chemical property.
  4. physical change.
Grade 8 Properties of Matter
Grade 8 Bonds and Mixing
A chemical bond is
  1. a group of atoms that are joined together.
  2. the basic particle of matter.
  3. the force that holds two atoms together.
  4. a substance formed from the chemical combination of two or more atoms.
Grade 8 Reactions
A chemical equation is
  1. the process by which particles leave a liquid and become a gas.
  2. a substance made by a chemical reaction.
  3. a statement of chemical symbols that shows what happens during a chemical reaction.
  4. a change in which matter keeps the same chemical properties; a change in size, shape, volume, or state of matter.
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