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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.
Transfer from Large Containers : As with all dangerous operations, it will pay you to think what the worst possible accident may be that could result from your actions and what wo
The mop weighs less Put a floor mop in water. Wring it out and then balance it on a triangular file placed on the corner of a table. Be sure you have it carefully balanced. Loo
Define Metabolism - Physiology of Growth and Development Resting metabolic rate of a newborn is twice as that of an adult/unit body weight basis. Since only colostrums are avai
Explain Pus Formation Once a neutrophil finds a foreign particle or a bacterium, it will engulf it releasing enzymes, hydrogen peroxide and other chemicals from its granules to
assignment for natural rubber
Measuring atmospheric pressure with a bicycle pump A bicycle pump with the washer reversed as represents can be used to calculate atmospheric pres- sure. The piston can be made
difference between autotrophic and heterotrophic succession
Objectives After performing the activities under this exercise you should be able to: 1. Calculate the current drawn by a given instrument/equipment /appliance and suggest a
A simple mercury barometer Seal single end of a glass tube about 80 cm in length by rotating it in a gas flame. The tube should be held as almost vertical as possible. Join a s
why does the periodic table useful to scientist
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