Page 25 - Curriculum Visions Dynamic Book

 Zinc oxide is a common additive to white exterior and gloss paints.
fungicide: any chemical that is designed to kill fungi and control the spread of fungal spores.
pesticide: any chemical that is designed to control pests (unwanted organisms) that are harmful to plants or animals.
pigment: any solid material used to give a liquid a colour.
Zinc sulphide
Zinc sulphide is deposited
on the inside of fluorescent tubes (see also uses of mercury, page 35) and cathode ray tubes (for televisions and computers). When bombarded by electrons, the particles of zinc sulphide glow, producing the patterns of light that we interpret as images.
Zinc chloride
Zinc chloride (ZnCl2) is used as a flux. It is also used as
a wood preservative and in batteries (see page 15).
Zinc sulphate
Zinc sulphate (ZnSO4) is used in the manufacture of rayon. It also makes an important trace fertiliser and is helpful
as a fungicide and pesticide, especially in citrus groves.
Zinc sulphate is also one
of the chemicals in the frothing agent used in the flotation process for enriching metals (see page 8).
 Zinc oxide powder being used in a dental formulation.
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