If I can't solve this, I need to revise...

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Across
  1. 1. Air is made up of different types of ______________, such as oxygen and nitrogen
  2. 5. Yummy Italian food that is called a mechanical mixture
  3. 10. A mechanical mixture can also be called a ______________ mixture because it is made up of many different substances, each with different appearances and characteristics.
  4. 11. An educated guess is based on prior knowledge. In Science it is called an ______________
  5. 12. Rainwater, orange juice, mouthwash and gasoline are all made up of ______________ matter
  6. 15. Name of the Saint we celebrate in February
  7. 16. Is anything that takes up space
Down
  1. 2. Textbooks, pizza, and cars are all made up of ______________ matter
  2. 3. The prefix "hetero" comes from the Greek word "heteros" which means ______________
  3. 4. Your Science teacher's last name (can you spell it correctly?)
  4. 6. Pure substances appear uniform, or ______________ throughout
  5. 7. ______________ have the same appearance throughout but are made up of two or more substances. These are all homogeneous mixtures
  6. 8. Matter can be classified by its ______________state: solid, liquid, gas (hint: you do this in Gym class)
  7. 9. Mixtures can be classified as either solutions or ______________ mixtures
  8. 13. A ______________ substance is made up of only one type of matter
  9. 14. A ______________ is made up of two or more different types of matter