Topic 2

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Across
  1. 3. : The substances formed as a result of a chemical reaction.
  2. 6. : A change that alters the form or appearance of matter but does not create a new substance.
  3. 7. : The starting substances in a chemical reaction.
  4. 9. : A process that releases heat energy into the surroundings.
  5. 10. : A change in which one or more substances are transformed into new substances.
  6. 11. : A material made of many small, repeating molecules bonded together.
Down
  1. 1. : A resource that comes from nature, such as water, air, or minerals.
  2. 2. : The idea that matter cannot be created or destroyed in a chemical reaction.
  3. 4. : A substance that is made by humans rather than found naturally.
  4. 5. : A reaction that absorbs heat from its surroundings.
  5. 7. : A process that causes a chemical change or transformation.
  6. 8. : A reaction in which one compound breaks down into two or more simpler substances.