Across
- 2. The opposite of acidic
- 5. Alkaline soil has more of this type of ion
- 6. Describes soil that has a surplus (extra) of hydrogen ions
- 8. An atom that has lost or gained an electron
- 9. Describes a soil that has a balance of H⁺ and OH⁻
- 10. Adding lime to soil mixes up clay particles which makes the soil more _________
Down
- 1. An essential substance which plants need to absorb in quite small amounts
- 3. This substance can be added to a acidic soil in order to neutralise it
- 4. The colour of sulphur
- 5. pH is a measure of the concentration of which kind of ion?
- 7. This substance can be added to alkaline soil in order to neutralise it