Across
- 2. the positively charged central core of an atom
- 7. the sun is a...
- 8. precursor of science
- 11. metals, non-metals and...
- 13. celestial body orbiting around the Earth or another planet
- 14. sixth planet from the sun which has an intricate dazzling ring system
- 15. it is the eighth planet from the sun and it's blue
- 16. the periodic table is made of...
- 17. the gas we breathe
Down
- 1. a natural phenomena involving the physical properties of matter and energy (8; 9;)
- 3. solid to gas
- 4. colourless, odourless and highly flammable gas whose symbol is H
- 5. a table of chemical elements (9;5;)
- 6. the ability to do a work
- 9. gas to solid
- 10. it has neither independet shape nor volume but tends to expand indefinitely
- 12. the star round which the Earth orbits
- 15. he discovered gravity