Astronomy, by Maya Zarry & Eva Stringer

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Across
  1. 4. matter can neither be created nor _________.
  2. 6. a substance that promotes a chemical change and creates salt water with a base.
  3. 10. a characteristic of matter that can be observed or measured without changing the identity of the matter.
  4. 14. smallest unit of an element that maintains the properties of that element.
  5. 15. indicator of a chemical change; a solid.
  6. 16. CO2
  7. 17. the measure of how acidic or basic water is.
  8. 19. two or more atoms joined by chemical bonds.
  9. 20. indicator of a chemical change; bubbles.
  10. 21. the color of blue litmus paper when it touches an acid.
  11. 22. indicator of a chemical change; feels warmer.
  12. 23. indicator of a chemical change; visually changes _____.
  13. 24. H2O
  14. 25. indicator of a chemical change; can hurt your eyes.
Down
  1. 1. reactants react to produce ________.
  2. 2. mixture grouped by substance type; ex: oil and water
  3. 3. The ________ table of the elements.
  4. 5. matter that is two or more pure substances physically combined.
  5. 7. forms new substances.
  6. 8. affects chemical properties; chemical formula changes; ex: formation of rust
  7. 9. The color of red litmus paper when it touches a base.
  8. 11. atoms of two or more elements joined by chemical bonds.
  9. 12. only affects physical properties like shape, size, or phase of matter; ex: slicing apple
  10. 13. any substance that causes chemical change and creates salt water with an acid.
  11. 18. evenly distributed mixture; ex: salad