Isotopes
ISOTOPES It is interesting to note that atoms of a given atomic number can have different number of neutrons. AtomsRead More »Isotopes
USES OF HYDROGEN GAS
USES OF HYDROGEN GAS Hydrogenation/Hardening of unsaturated vegetable oils to saturated fats/margarine. When Hydrogen is passed through unsaturated compounds inRead More »USES OF HYDROGEN GAS
THE STRUCTURE OF THE ATOM AND THE PERIODIC TABLE
THE STRUCTURE OF THE ATOM AND THE PERIODIC TABLE 1.1 The structure of the atom When scientists started exploring matter,Read More »THE STRUCTURE OF THE ATOM AND THE PERIODIC TABLE
PROPERTIES OF HYDROGEN GAS
(a) Physical properties Hydrogen is a neutral, colourless and odourless gas. When mixed with air it has a characteristic pungentRead More »PROPERTIES OF HYDROGEN GAS
HYDROGEN
Occurrence Hydrogen does not occur free in nature. It occurs as Water and in Petroleum. School laboratory Preparation Procedure PutRead More »HYDROGEN
REACTION OF METALS WITH WATER
REACTION OF METALS WITH WATER The higher the metal in the reactivity series the more reactive the metal with water.Read More »REACTION OF METALS WITH WATER
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
WATER
WATER Pure water is a colourless, odourless, tasteless, neutral liquid. Pure water does not exist in nature but naturally inRead 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 aRead 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 ofRead More »REACTION OF NON-METALS WITH OXYGEN/AIR