active
adjective
producing a chemical or biological reaction
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noun
a method of describing the process involved in a chemical reaction, using chemical symbols to show the reactants and products
adjective
concentrated liquids or substances have been made stronger by having water removed
adjective
a crude substance is still in its natural state and has not yet been refined for use by chemical processes
adjective
a dehydrated chemical compound has lost hydrogen or oxygen atoms in the ratio 2:1
adjective
an endothermic reaction is a chemical reaction in which heat is absorbed, not produced
adjective
an exothermic reaction is a chemical reaction in which heat is produced, not absorbed
adjective
industrial-strength substances or chemicals are strong enough to use in industry
adjective
an inert substance does not produce a chemical reaction when it is mixed with other substances
adjective
an insoluble substance does not dissolve and disappear when you put it into liquid
adjective
a reactive substance experiences a chemical reaction when it is mixed with another substance
adjective
a chemical solution that is saturated has as much of a solid substance as possible mixed in it as part of the liquid
adjective
used about chemical or biological changes or processes that happen suddenly in a natural way
adjective
an unstable substance reacts very easily with other chemical substances and can be dangerous
adverb
adjective
adjective
adjective
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a news article that consists of a chart … and only has a small amount of text
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