Across
- 3. A mixture when one substance dissolves another
- 5. Building blocks of protein
- 7. Tiny particles that all matter is made of
- 8. Makes up 78% of the air we breathe
- 9. Mixture of metals
Down
- 1. The study of what substances are made of
- 2. Negatively charged subatomic particles
- 4. The Centre of an atom
- 6. the substance in which the solute dissolves
- 7. The first column on the periodic table