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Search Results for chemicals - All Grades

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Grade 11 Periodic Table and Elements
Made up of one or two letters and is used to represent the elements.
  1. Chemical name
  2. Chemical symbol
  3. Chemical change
  4. Precipitate
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 of the following statements defines exothermic reactions?
  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 Reactions
One or more substances change into one or more new substances called products.
  1. chemical property
  2. precipitate
  3. reactant
  4. chemical reaction
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 5 Reactions
Chemical Equation
  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.
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 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 7 Reactions
A chemical change
  1. always can be reversed
  2. never will change state
  3. never can be reversed
  4. cannot be reversed easily
Grade 11 Reactions
In a chemical reaction
  1. the mass of the reactants equals the mass of the products
  2. the mass of the products is greater than the mass of the reactants
  3. the number of atoms in the reactants and products must change
  4. energy as heat must be added to the reactants
Grade 5 Properties of Matter
Chemical Change
  1. A substance made by a chemical reaction
  2. A change in which one kind of matter changes into a different kind of matter with different properties
  3. A substance used in a chemical reaction.
  4. The process by which particles leave a liquid and become a gas.
Grade 5 Properties of Matter
Mixing lemonade mix into water is a
  1. chemical change.
  2. reaction.
  3. chemical property.
  4. physical change.
Grade 10 Lab Practices and Tools
To dispose of chemicals
  1. Throw them in the trash
  2. Follow the instructions of the teacher
  3. Burn them in the burner
  4. Flush them down the sink
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