Across
- 3. a mixture where the substances are so evenly distributed that it is difficult to distinguish one from another
- 4. a reaction that releases energy, usually in the form of heat; feels hot
- 5. a reaction that absorbs energy; feels cold
- 9. amount of matter in an object; measured in grams (g)
- 10. a change that alters the form or appearance of a material but does not make the material into another substance
- 11. the temperature at which a liquid goes from the liquid state to the gas
- 13. group of atoms that are joined by sharing electrons
- 17. substance that takes part in and undergoes change during a reaction
- 21. the thing(s) the scientist keeps the same
- 23. no distinct shape or volume; made up of electrically charged particles
- 24. the outcome the scientist measures; the responding variable
Down
- 1. system of knowledge and the methods you use to find that knowledge
- 2. researched prediction; "if...,then..." statement
- 6. made from two or more simpler elements
- 7. has no definite shape and no definite volume
- 8. a change in which one or more substances combine or break apart to form new substances
- 10. substance(s) formed as the result of a chemical reaction
- 12. a mixture with parts that are noticeably different from one another
- 14. has a definite volume, but NO definite shape
- 15. equal mass divided by volume
- 16. the thing the scientist changes; manipulated variable
- 18. has a definite shape and definite volume
- 19. point temperature at which a substance changes from a solid to a liquid
- 20. anything that has mass and volume
- 22. smallest particle of an element