Across
- 4. a simplified representation of solids, liquids and gases
- 5. a change that does not result in a new substance being produced
- 7. clusters of atoms
- 10. when a metal reacts with the chemicals in its environment
- 12. the chemical reaction in plants that converts carbon dioxide and water into oxygen and glucose using energy from the Sun
- 14. any chemical reaction where a substance burns in oxygen to produce light and heat
- 15. a change that results in a new substance being formed
- 18. able to be stretched to form a wire
- 19. substances made up of only one type of atom
Down
- 1. a table that shows all the known elements
- 2. the substances formed in chemical reactions
- 3. the smallest building blocks of matter
- 6. a mixture in which one substance is dissolved in another
- 8. the characteristics of a substance
- 9. easily crumbled or shattered
- 11. a simple chemical equation where chemicals are represented by their names
- 13. a change of state from solid to gas
- 16. mixture of a metal with other metals or non-metals
- 17. able to be hammered or bent into new shapes