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what is a chemical
QUESTION 1 (a) How did psychology emerge as a separate scientific field? (b) Elaborate on any two schools of Psychology QUESTION 2 Elaborate on the correlational met
Eight students conducted a controlled experiment to demonstrate how walking and running affected their heart rates. Use the data below to answer the following questions. Effects of
Another way to show that air expands when heated Snap a toy balloon over the neck of a small bottle and place the bottle in a pan of warm water.
Rancidity:- Formation of aldehyde due to oxidation of unsaturated glycerides.
Neptune The eigth planet, Neptune, was discoveted in 1846 by astronomer Johann Gottfried Galle. We have already told you the story of its discovery in last. It is so f
Test for studying suitable chemical treatment for changing the chemical nature of iodine Reactivity of iodine is tested with 1. Water and, 2. Sodium thiosulphate soluti
How to make a simple apparatus for distilling water You can make a easy water-distilling apparatus from a flask, and a length of glass or rubber tubing. Fit the flask with a si
A compressed air pop-gun Use a straight piece of glass or plastic tubing of 1 or 2 cm in diameter and 15 or 20 cm in length. Make a piston by twisting some string on a pencil t
Explain the term Liming - Decreasing Soil Acidity Acid soils can be managed in two ways, viz. either by growing crops suitable for particular soil pH or by treating the soils w
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