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G.R The chemical equation should be balanced.
To achieve the conservation law of matter
.......................is the chemical compounds that produced from combination of its elements by constant weight ratios.
Law of constant ratio
On burning a magnesium ribbon in air, a ................. powder is formed.
white
................... are the oxides that cause building corrosion.
Sulphur oxides
........................ is a gas which acts as a green house effect.
carbon dioxide gas
G.R Lightning causes environmental pollution.
Because during lightning nitrogen oxides are formed
G.R Sulphur oxides have a negative effect.
Because they cause respiratory system malfunction, because they are acidic gases
What happen ? Burning a piece of coal in air.
carbon dioxide gas is produced
