Science

2. the substance found in plant leaves that make leaves green and collects energy from the Sun for photosynthesis
4. a decrease in size
5. the smallest building blocks of matter
6. able to be hammered or bent into new shapes
8. a change of state where gas is cooled and forms a liquid
12. a mixture in which another substance is dissolved
13. minerals rich in metals such as copper and iron; the pure metal can be extracted from the ore
16. when a metal reacts with the chemicals in its environment
17. An alloy of iron and carbon that is much harder than iron and less likely to rust
18. the first chemical explosive; made up of a mixture of saltpetre, sulphur and carbon
19. a substance that can chemically dissolve other

1. an alloy of copper and tin that is much harder than pure copper
3. evaporation of solvent from a solution to leave solute behind as crystals
7. easily crumbled or shattered
9. a change of state from gas to solid
10. a substance that dissolves another substance
11. clusters of atoms
14. a substance being dissolved
15. any chemical reaction where a substance burns in oxygen to produce light and heat