Crossword

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Across
  1. 1. stable in shape with no holes
  2. 4. measures how heavy the subject is for its size. To find a density of an object, you need to divide its mass by its volume
  3. 7. measurements like liter, meter or gram
  4. 10. chemical bonding in which three pairs of electrons shared between two elements
  5. 12. chemical bonding in which one pair of electrons are shared between two elements
  6. 13. thing which represent or stands for something else
  7. 14. anything which has weight and takes up space
Down
  1. 2. having consistency like water or oil
  2. 3. all existing matter and space considered as a whole; cosmos
  3. 4. chemical bonding in which two pairs of electrons are shared between two elements
  4. 5. airline fluid substance which expands freely to fill any available space
  5. 6. measure of the effort gravity which object has
  6. 8. empty/free space; the physical universe beyond earth’s atmosphere
  7. 9. how much matter the subject is
  8. 11. physical force against the object