Across
- 2. the observation in testing the oxygen
- 7. the process of forming a precipitate.
- 8. the result of the experiment is consistent and repeatable
- 10. when a solid mixes evenly with a liquid so that it disappears and forms a solution
- 12. breaking down or rotting of once-living materials, like plants or animals
- 13. a special equipment for neutralisation
- 14. variable that is controlled
- 15. a solution where water is the solvent
- 17. variable that is changed
- 18. a mixture formed when a solute dissolves in a solvent
- 19. the substances you start with in a chemical reaction
- 20. variable that is measured
- 22. the sound produced in testing hydrogen
- 24. the big number in front of a chemical formula showing how many molecules of that substance are present
Down
- 1. the process when you mix the acids and alkalis solution together
- 3. ability of substance that is not able to dissolve in a liquid
- 4. the experiment tests what it is supposed to test(correct variables)
- 5. substance to test the presence of carbon dioxide
- 6. the substance that dissolves
- 9. a solid that forms when two soluble reactants react and produce an insoluble substance
- 11. the liquid that does the dissolving
- 16. the small number written below in a chemical formula showing how many atoms of an element are in a molecule
- 18. ability of substance that is able to dissolve in a liquid (usually water)
- 21. the colour changed when the carbon dioxide is present
- 23. the new substances formed after the reaction