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Plaster of Paris
Secure some plaster of Paris and mix a small amount with water. It must be worked quickly or it will harden whereas being mixed. Place the mixture in moulds and let it set unless very hard. Study the appearance and properties of the samples. 3 Collections of building materials Collect samples of all the dissimilar types of rock or mineral building materials available in your locality like as marble, granite, slate, limestone, brick, cement, plaster, etc. These may be added to your collection after proper labels have been close to the samples
Objectives After studying this unit you should be able to: 1. explain the significance of the fire triangle, 2. list common causes of fire, 3. describe the purpose
What is Parent material Parent material refers to the primary material from which the soil is formed. The parent material may be either a solid rock, a decomposed rock, organic
How to make a filter A plant pot with a plug of cotton wool in the bottom and a layer of sand a few inches deep makes a satisfactory filter for many purposes. Make some mudd
What is the job of chromatin in an animal cell?
State the process of Liming · Affects the solubility and availability of most of the plant nutrients and raises the level of exchangeable base status of calcium and magnesi
Nitrogen Cycle: Nitrogen is vital part of many essential organic compounds especially nucleic acids and proteins. It also forms a major part (79 per cent) of the atmosphere. I
Determine about the Plant-Available Soil Moisture Plant available soil moisture or total available water is the difference between the amount of water held in the plants root
Scientific Chemistry: The Arab doctors, perfumers and metallurgists made their greatest contribution in chemistry. This was mainly due to the fact that Arab scholars, unlike
Amino acids are the building blocks of proteins. All proteins consist of a sequence of amino acids, which are compounds containing an amino group (-BIB) and a carhoxyl gro
Miscellaneous Dangerous Substances : This was introduced in the United Kingdom to identify other hazardous substances and consists of a black exclamation mark on a white backgroun
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