Unit 1 Crossword Puzzle
Across
- 2. a substance which has a constant composition and characteristics
- 4. Oxygen (O) and Potassium (K) are examples of an
- 6. a pure substance made up of more then one element
- 8. things that can be shown with a chemical formula are called a
- 12. energy is released to the surrounding area in a ______ reaction
- 13. anything that takes up space
- 16. using significant figures what is 201.9 + 2.765
- 17. these are observed and are either chemical or physical
- 20. the amount of matter that something has is its
- 21. when you have a bonfire a ______ change takes place
- 22. when measuring in chemistry we use significant figures, so the last digit is
- 24. 2.60 x 10^3 m/s is an example of scientific _________
- 27. the study of matter, its changes, and its properties
- 29. depending on gravity mass doesn't change but ____ does
Down
- 1. an evenly mixed mixture
- 3. a mixture where the different parts are visible
- 5. a water displacement test can be used to find
- 7. factor that can be changed to effect the results
- 9. soild, liquid, gas, and plasma are
- 10. how close the results were to each other
- 11. how close the average is to the correct answer
- 14. melting takes in energy from the surrounding area in a _____ reaction
- 15. a way that scientists use to test their problems
- 18. melting is an example of a ____ change
- 19. two substances combined together would give me a
- 23. mass divided by volume equals
- 25. what is measured in Kelvin
- 26. using significant figures what is 12.68m * 0.0081m
- 28. transferred energy