Science

123456789
Across
  1. 1. the 98 element of the periodic table
  2. 4. have a negative charge and a mass of zero
  3. 5. A substance that consists of atoms that have the same number of protons
  4. 6. the 54 element of the periodic table
  5. 9. ability to burn or ignite
Down
  1. 1. A substance composed of two or more elements
  2. 2. ability to be hammered into thin sheets
  3. 3. Smallest unit of matter
  4. 7. ability to dissolve or be dissolved
  5. 8. center of the atom