| SODALIME | Mixture of calcium oxide and sodium hydroxide, used to absorb moisture, carbon dioxide etc. (4,4) |
| BASES | Substances such as ammonia and sodium hydroxide |
| LIMEKILN | Producer of calcium oxide |
| EFFECT | The process whereby the Earth heats up in response to a blanketing of atmospheric cloud, dust, carbon dioxide etc; the Greenhouse ... |
| BIOGAS | Methane, carbon dioxide, etc. |
| LIMY | Consisting of calcium oxide; greenish? (4) |
| LIME | Caustic substance consisting of calcium oxide (4) |
| AERATE | Charge with air, carbon dioxide etc (6) |
| CALAMINE | Pink powder consisting of zinc oxide and ferric oxide, used to make a soothing lotion for itchy skin (8) |
| CRASHMAT | As is used to absorb the impact of landing after a high-jump (5,3) |
| NONMETAL | Nitric oxide and nitrogen satisfied a student of such elements (3-5) |
| DETRITUS | Pulp used to absorb most of stale waste (8) |
| HAIR | Minuscule appendage at the base of a plant root, used to absorb moisture and nutrition from the soil (4) |
| LEMONADE | French newspaper used to absorb a drink (8) |
| TALCUM | Powder used to absorb moisture and prevent irritation (6) |
| ARMAGNAC | Marc worked around silver and sodium, in spirit (8) |
| CAUSTICSODA | Alternative name for sodium hydroxide, used in the manufacture of soap, paper, detergents etc. (7,4) |
| SILICAGEL | Substance in a pouch used to absorb moisture (6,3) |
| ELEMENTS | Fe, Cu and Na |
| CAUSTIC | ____ soda, another name for sodium hydroxide used in making soap (7) |
