Chemistry Unit Vocabulary

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Across
  1. 2. a combination of two or more things
  2. 6. information that can be used to support or reject an idea
  3. 7. a special kind of mixture where you cannot tell the different parts from each other
  4. 9. a substance that is usually sour, such as vinegar or orange juice
  5. 10. a pretend version of something that scientists use when the real thing is too big, small, or complicated to work with
  6. 12. a test used to discover new information about a question
  7. 14. a name for people in the past who studied the combination of chemicals
  8. 16. a state of matter, such as water when it is steam
  9. 17. when one substance mixes with another and it looks like it disappears, such as when sugar mixes into tea
  10. 19. a very tiny thing, sometimes too small to be seen
  11. 20. to pay close attention to something
Down
  1. 1. to combine two or more things
  2. 3. to create something new, often an object or a way of doing something
  3. 4. a type of gas that plants sometimes take in and that animals release when they breathe
  4. 5. a process where one or more substances interact to form a new substance
  5. 7. different forms of matter that include solid, liquid, and gas
  6. 8. a type of gas that animals use to breathe and that plants release
  7. 11. a material that has specific properties
  8. 13. when something bursts outwards
  9. 15. anything that takes up space; can be in different forms such as solid, liquid, or gas
  10. 18. a state of matter, such as water when you can pour it
  11. 19. something you can observe about an object or material