WATER POLLUTION
WATER POLLUTION Water pollution take place when undesirable substances are added into the water. Sources of water pollution include: (i)… Read More »WATER POLLUTION
Chemistry
WATER
WATER Pure water is a colourless, odourless, tasteless, neutral liquid. Pure water does not exist in nature but naturally in… Read More »WATER
REACTIVITY SERIES OF METALS/ELEMENTS
REACTIVITY SERIES OF METALS/ELEMENTS Metals compete for combined Oxygen. A metal/element with higher affinity for oxygen removes Oxygen from a… Read More »REACTIVITY SERIES OF METALS/ELEMENTS
REACTION OF NON-METALS WITH OXYGEN/AIR
The following experiments show the reaction of non-metals with Oxygen and air. Burning Carbon Procedure (a) Using a pair of… Read More »REACTION OF NON-METALS WITH OXYGEN/AIR
USES OF OXYGEN
Oxygen is put in cylinders for use where natural supply is not sufficiently enough. This is mainly in: (i) Mountain… Read More »USES OF OXYGEN
REACTION OF METALS WITH OXYGEN/AIR
The following experiments show the reaction of metals with Oxygen and air. Burning Magnesium Procedure (a) Cut a 2cm length… Read More »REACTION OF METALS WITH OXYGEN/AIR
OXYGEN
OXYGEN a) Occurrence. Fifty 50% of the earth’s crust consist of Oxygen combined with other elements e.g. oxides of metals… Read More »OXYGEN
THE ATMOSPHERE
THE ATMOSPHERE The atmosphere is made up of air. Air is a mixture of colourless, odourless gases which is felt… Read More »THE ATMOSPHERE
INTRODUCTION TO ACIDS, BASES AND INDICATORS
. In a school laboratory: (i) An acid may be defined as a substance that turns litmus red. (ii) A… Read More »INTRODUCTION TO ACIDS, BASES AND INDICATORS
PROPERTIES OF ACIDS
(A) PHYSICAL PROPERTIES OF ACIDS Acids have a characteristic sour taste Most acids are colourless liquids Mineral acids are odourless.… Read More »PROPERTIES OF ACIDS