Unit 5 Pre-IB Chemistry

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Across
  1. 2. what is formed or the result at the end of a chemical reaction.
  2. 3. a chemical reaction where a hydrocarbon reacts with oxygen and results in heat, carbon dioxide, and water.
  3. 5. a substance made up of 2 or more elements.
  4. 7. the start of a chemical reaction and the chemical substance that is present.
  5. 8. an atom with an electrical charge
  6. 10. a number in front of a symbol or chemical formula which indicates how many molecules or atoms are involved.
  7. 11. a chemical reaction where ONE substance/reactant breaks down and results in multiple products.
  8. 14. the kind of bond where the sharing of electrons occurs between atoms.
Down
  1. 1. a chemical reaction where two compounds switch their elements with each other.
  2. 4. a chemical reaction where a single element combines with another by replacing the other element that was previously in the compound
  3. 6. a compound made up of 2 of the same elements.
  4. 9. a small number on the bottom right of a symbol that indicates the number of atoms of the symbol it is attached too
  5. 12. a chemical reaction where at least 2 or more elements combine and result in ONE product.
  6. 13. the kind of bond where an atom gives electrons to another atom.