matter

12345678
Across
  1. 5. no fixed shape or volume; expands to fill its container. (3 letters)
  2. 6. characteristic of a substance that remains unchanged in physical changes. (8 letters)
  3. 7. that has mass and takes up space. (7 letters)
  4. 8. entities formed during chemical changes. (9 letters)
Down
  1. 1. that result in the formation of new substances. (8 letters)
  2. 2. that do not alter the substance’s identity. (8 letters)
  3. 3. a definite volume but takes the shape of its container. (6 letters)
  4. 4. a fixed shape and volume; particles are tightly packed. (5 letters)