While Democritus proposed the philosophical concept of the atom in ancient Greece, John Dalton formulated the first scientifically based atomic theory in 1803. His theory stated that elements are composed of indivisible atoms, atoms of the same element are identical, and compounds form from atoms combining in fixed ratios.
Explanation:
Methanol (CH₃OH) is metabolized to formaldehyde and formic acid, causing optic nerve damage, blindness, or death. Ethanol is used in beverages.
Explanation:
Silver bromide (AgBr) decomposes on exposure to light (photochemical decomposition) forming silver and bromine: 2AgBr(s) → 2Ag(s) + Br₂(g). This is used in photographic films to capture images. AgCl also light-sensitive but AgBr is primarily used. Calcium carbonate decomposition is thermal. Water electrolysis is electric decomposition.
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