Unit 5 Vocabulary to Know

Edit Answers
12345678910111213
Across
  1. 2. the path or orbit electrons follow around the nucleus of an atom
  2. 6. a combination of substances that can be physically separated from one another
  3. 8. the substances that are formed during a chemical reaction; in a chemical reaction the arrows point toward the product
  4. 10. tending to cause corrosion
  5. 12. a chemical combination of two or more elements
  6. 13. interaction between molecules that causes a chemical change, converting an existing substance into a new substance
Down
  1. 1. not human-made
  2. 3. a pure substance that cannot be broken down into simpler substances by chemical reactions
  3. 4. made by humans
  4. 5. chemical reaction that gives off heat energy
  5. 7. a chemical reaction that absorbs heat energy
  6. 9. a group of atoms held together by chemical bonds
  7. 11. the substances present before a chemical reaction occurs; in a chemical reaction the arrow usually points away from the reactant(s)