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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.
Question 1: a) Briefly explain the following terms: i) evaporation ii) condensation iii) transpiration b) Describe the hydrologic cycle. Question 2: a) Define an
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two human made features o the aerial map
Explain the Gonadotropic Hormones (GTH): There are two gonadotropic hormones which regulate gonadal functions. They are follicle stimulating hormone (FSH) and luteinizing hormo
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what is subphylum chordata?
Define the process of Soil acidity Acid soils are made more suitable for agricultural use by liming which raises the soil pH. Soil acidity is commonly decreased by adding carb
In many states, marijuana is now legal for certain medical purposes. Identify some clinical issues that may now present themselves because of this. What if you have a client who is
Hello sir, This is pradeep. I have completed M.Sc Biochemistry since then i worked as a chemist in quality control department in pharmaceutical and cosmetic companies. I have co
What is a covalent crystal? A covalent crystal is one in which the lattice structure is held together by powerful covalent bonds. These crystals tend not to be soluble in water
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