C3.3 Types of chemical reactions
Across
- 1. the relative acidity or alkalinity of an aqueous solution
- 4. a solution that resists changes in pH
- 6. a substance that neutralises acids forming a salt and water only
- 8. describes a substance that has gained oxygen, or lost electrons, in a chemical reaction
- 9. a solution, not acidic or alkaline, with a pH of 7
- 10. a solution in which the solvent is water
- 12. describes a substance that has lost oxygen, or gained electrons, in a chemical reaction
- 15. a measure of the amount of dissolved solute present in a solution
- 17. ionic compounds that contain the carbonate ion
- 19. a soluble base
- 21. when a solution contains a relatively high amount of solute
- 22. bubbling or fizzing observed in a chemical reaction
- 24. to adjust the reading on an instrument to match the observed value with the value of the quantity being measured
- 25. a reaction between an acid and a base or alkali, producing a salt plus water
- 26. a gain of oxygen, or loss of electrons, by a substance in a chemical reaction
Down
- 2. a type of chemical equation that models the change that happens to one reactant in a reaction
- 3. a substance that reduces another substance by accepting oxygen or by donating electrons
- 5. a chemical reaction in which one substance is reduced while another is oxidised
- 7. a substance that oxidises another substance by donating oxygen or by accepting electrons
- 11. ascale that measures relative acidity or alkalinity of an aqueous solution, from 0 (strongly acidic) through 7 (neutral), to 14 (strongly alkaline)
- 13. a loss of oxygen, or gain of electrons, by a substance in a chemical reaction
- 14. a solution with a relatively low amount of solute
- 16. a substance that ionises in water, releasing hydrogen ions
- 18. an acid that is fully ionised in aqueous solution
- 20. acid only partially ionised in aqueous solution
- 23. a compound formed when hydrogen ions in an acid are replaced by metal ions or ammonium ions.