Year 8 Chemical Reactions Crossword Puzzle 3

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Across
  1. 3. In a chemical reaction, we begin with substances called ………………………..
  2. 5. A chemical reaction is a process in which one or more substances undergo a chemical change. The ………………. of these substances rearrange to form new substances with different chemical properties.
  3. 6. Word equation is a representation of a chemical reaction using the …………….. of the substances involved.
  4. 7. The atoms are rearranged, new bonds are formed, and new substances, called ………………………., are created.
Down
  1. 1. When these reactants undergo a chemical change, the chemical …………… within them are broken.
  2. 2. …………………… of chemical change include gas production, temperature change, solid (precipitate) formation and colour change. These are observable signs that a chemical reaction is taking place.
  3. 4. Chemical equation is a representation of a chemical reaction using symbols and ………………………… of the substances involved.