3 Write the properties of thesesubstances. Water,
glass chalk, iron ball sugar,salt, flour, coal, soil, pen,
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1 The main properties of water are its polarity, cohesion, adhesion, surface tension, high specific heat, and evaporative cooling. A water molecule is slightly charged on both ends. This is because oxygen is more electronegative than hydrogen. ... The stream of water bends due to the polarity of water
2 properties of sugar
Sweetness. Sugar has an exceptionally pure sweetness that is completely free of secondary flavours and aftertastes. ...
Taste and aroma. Sugar enhances the flavour and aroma of, for example, fruit, berries and vegetables. ...
Volume. ...
Texture. ...
Shelf life. ...
Fermentation. ...
Reducing the freezing point. ...
Colour.
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3 The main characteristics of glass are transparency, heat resistance, pressure and breakage resistance and chemical resistance.
4 Chalk is a non-clastic carbonate sedimentary rock that is form of limestone compesed of the mineral calcite. It is soft, fine-grained and easily pulverized. Color is white-to-grayish variety of limestone rock. It is composed of the shells of such minute marine organisms as foraminifera, coccoliths, and rhabdoliths.
5 Properties of Salt
Crystals or white crystalline powder.
Transparent and colourless in crystalline form – rather like ice.
Crystallises in the isometric system, usually in the form of cubes.
Soluble in water (35.6g/100g at 0°C and 39.2g/100g at 100°).
Slightly soluble in alcohol, but insoluble in concentrated hydrochloric acid.
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6 The functional properties of wheat flour and composite flours such as swelling capacity, water absorption capacity, oil absorption capacity, emulsion activity, emulsion stability, foam capacity, foam stability, gelatinization temperature, least gelation concentration and bulk density were increased with increase in the
7 Chemical properties of coal
Moisture. Moisture is an important property of coal, as all coals are mined wet. ...
Volatile matter. ...
Ash. ...
Fixed carbon. ...
Relative density. ...
Particle size distribution. ...
Float-sink test. ...
Abrasion testing.
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8 All soils contain mineral particles, organic matter, water and air. The combinations of these determine the soil's properties – its texture, structure, porosity, chemistry and colour. Soil is made up of different-sized particles
9 Six Characteristics of a Good Pen
Look for fit. Just as in buying clothes, good fit is a mark of quality and style. ...
Finish first. These days, there is a variety of pen finishes from which to choose: resins, metals, celluloid, wood, and more. ...
Find balance. ...
Make a point. ...
A little insurance. ...
Be dazzled.
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