Vocab challenge

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Across
  1. 1. To make an educated guess on what will happen(if,then statement)
  2. 3. How tightly something is packed
  3. 5. the amount of space the object takes up
  4. 7. characteristic of matter that can only be observed by performing a chemical reaction
  5. 10. zero in between significant digits in a number
  6. 12. physical property that doesnt't change with amount of matter
  7. 14. a change in physical properties
  8. 15. Characteristic that can be observed/measured w/o changing amount of matter
Down
  1. 2. zero in the representation of a number
  2. 4. To observe and collect data
  3. 6. basis for a system of units
  4. 8. physical property that changes with amount of matter in a sample
  5. 9. The amount of matter that makes up a substance
  6. 11. change of materials with diff properties, chemically changed
  7. 13. Final decision or judgment