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Cement and concrete
Secure a small bag of Portland cement. Have the pupils mix it with water and put it in tin can covers, paper cups, or small pasteboard boxes unless it hardens. Study its appearance and its properties. Break a piece of cement and study it. Mix the dry cement with about twice as much sand or gravel. This will form concrete. After adding water and mixing thoroughly place it in moulds. Permit these to arden various days. Again study the appearance and the characteristics of these samples.
describe the differences between GDP and GDP per capita
Explain the Urine Creatinine Test This test measures the amount of creatinine in urine. A measurement of the serum creatinine level is often used to evaluate kidney function. U
Objectives After doing this exercise you should be able to: 1. Identify the contents of the gas cylinder by observing the colour code, 2. State the nature of the gas pr
QUESTION (A) Describe, with diagram, the structure of a neuron (B) ‘Neurons are specialized cells that carry messages.' Describe how messages are carried by neurons (C) F
1. The solid wastes from a summer camp with 100 children and a staff of 25 are to be collected once per week. If bottles and cans (representing 20% of the weight) are removed, pape
advantages and disadvantages of protozoa
Biotechnology in agriculture: Production of enough food to meet the demands of an ever-increasing population in the world is a major task and a challenge to agricultural scient
1. Describe the properties of water that make if invaluable to life as we know it. 2. Explain why the versatility of carbon is essential to life. 3. Describe the
Mutarotation:- The process whereby the configuration of an anomeric carbon converts from a and p and vice-versa.
How to make a constellarium A constellarium is a simple device used in teaching the shapes of several constellations. Get a cardboard or wood box and remove one end. Draw the s
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