Across
- 4. If a material absorbs a lot of water, it is an ............... material.
- 6. Mixing bicarbonate of soda with vinegar is a .............reaction and gas is produced.
- 9. When water turns into water vapour, it.........
- 11. A chemical reaction is ................ - you can't get the original materials back.
- 12. Small grains of sugar dissolve .......... than large grains of sugar.
Down
- 1. This kind of reaction is reversible.
- 2. Salt and sugar are ...............in water.
- 3. This material can be rigid or flexible.
- 5. Sugar .............. in water.
- 6. Burning is a ..........reaction.
- 7. Water vapour is a kind of ......
- 8. When you only change one variable an experiment is ......
- 10. When ice turns to water, it ......