MATTER

123456789
Across
  1. 3. – a homogeneous mixture
  2. 5. – The center of an atom
  3. 7. – The process where a solid changes directly to a gas
  4. 8. – Positively charged particles in an atom
Down
  1. 1. – Anything that has mass and takes up space
  2. 2. – Process where a gas turns into a liquid
  3. 4. – Negatively charged particles in an atom
  4. 6. – A pure substance made of only one type of atom
  5. 9. – The form of matter that has a definite shape and volume