matter

12345678
Across
  1. 4. atoms are very close together
  2. 5. anything that has mass and takes up space
  3. 7. pure substances that are composed of two or more types of elements that are chemically conbined.
  4. 8. composed of two or more different substances that retain their own indivitual
Down
  1. 1. the smallest basic unit of matter.
  2. 2. atoms are freely moving about.
  3. 3. atoms are somewhat together
  4. 6. cannot be changed into simpler substances