Across
- 1. most common element a star will fuse to make helium
- 5. where stars are born
- 7. fundamental particle
- 9. country where the Large Hadron Collider is located
- 10. separation of light that reflects according wavelengths
- 12. largest moon of Neptune
- 13. degree of compactness
- 14. rare radioactive gas
Down
- 1. class of organic chemicals
- 2. a reaction involving oxygen
- 3. synthetic element with atomic number 118
- 4. colourless fluid in blood
- 6. a measure of amount in chemistry
- 8. method of determining the concentration of a known analyte
- 11. natural colouring matter of animals and plants
- 15. a negatively charged atom