grade 10 chemistry

It is used in photography. It is used in silvering mirrors. It is used in making marking ink et..

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An atom or a molecule is a very minute particle; the actual mass of an atom is extremely small. The mass of atoms extends from 1.67 x 10 - 2 4 g (hydrogen) to 4.0 x 10 - 2 2 g only. It is physically not possible to measure such small and light masses easily. In 1811, Avag..

1 cm 3 of ethanol weighs 0.79 g or 0.79 x 10 - 3 kg 1 m 3 i.e., 10 6 cm 3 weighs = 0.79 x 10 - 3 x 10 6 kg = 0.79 x 10 3 kg 0.79 g cm - 3 = 0.79 x 10 3 kg m - ..

Concentrated hydrochloric acid gets oxidized to chlorine by the action of oxidizing agents such as manganese dioxide, lead dioxide, red lead, potassium permanganate, potassium dichromate etc. The properties of hydrochloric acid are summarized in figure 5.10 shown below..

Physical Properties of Oxygen - Oxygen (or dioxygen) has the following physical properties. Oxygen is colorless, odorless and a tasteless diatomic gas under normal conditions. Oxygen is slightly heavier than air. Its density relative to air is 1.1053. Oxygen is sparingly soluble in water. 30 mL of ..

Oxides that can add on hydroxyl ions to their molecules are called basic oxides. These oxides get neutralized when they react with acids. Basic oxide + Acid Salt + Water ..

Acids react with carbonates and hydrogen carbonates to form their respective salt, water and carbon dioxide. Carbonate/Bicarbonate + Acid Salt + Water + Carbon dioxide ..

All alkalis are bases that dissociate in water to yield hydroxyl ion (OH - ) as the only negative ions. Sodium hydroxide, potassium hydroxide, calcium hydroxide and ammonium hydroxide are the common alkali..

Some bases can be prepared by the direct combination of a metal with oxygen. For e.g., Metal + Oxygen Basic oxi..