Chemistry
Across
- 4. /is a fast process of burning something
- 7. /are atoms which have the same atomic number and different atomic mass
Down
- 1. /electronic orbits are the paths followed by electrons around the nucleus of the atom
- 2. /is a chemical reaction in which a substance combines with oxygen
- 3. /the elements found in Group 8 of the Periodic Table
- 5. /the center of an atom formed from protons and neutrons
- 6. /a very small particle of an element