Module 2 Vocabulary

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Across
  1. 3. a starting substance in a chemical reaction.
  2. 5. the amount of space a substance takes up.
  3. 6. a substance produced by a chemical reaction.
  4. 7. the amount of matter in an object.
  5. 8. a number placed in front of an element symbol or chemical formula in an equation.
  6. 11. a change in matter in which the substances that make up the matter change into other substances with different chemical and physical properties.
  7. 13. more energy is required to break the bonds of the reactants than is released when products form.
  8. 14. occurs when a substance reacts with another substance, changing it into a new substance.
  9. 15. more energy is released when the products form than is required to break the bonds in the reactants.
  10. 16. a characteristic of matter that can be observed or measured without changing the identity of the matter.
Down
  1. 1. the energy released when atoms form bonds.
  2. 2. occurs when substances react with oxidizing agents, changing them to a new substance.
  3. 4. the ability of a type of matter to burn easily.
  4. 9. a characteristic of matter that can be observed as it changes to a different type of matter.
  5. 10. a process in which atoms of one or more substances rearrange to form one or more new substances.
  6. 12. the mass per unit volume of a substance.