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chemistry Practice tests Neco, Jamb, Wascce,SSce, Sat, Gre, Toefel, Gmat Online

Practice chemistry tests question Below by selecting the right option.


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When a crystal was added to the clear solution of its salt, the crystal did not dissolve and the solution remained unchanged. This showed that the solution was




concentrated
B


unsaturated
C


saturated
D

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A particle that contains 11 protons, 12 neutrons and 10 electrons is probably a




metallic ion
B


non-metallic ion
C


neutral metal
D

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A difference between chemical and physical change is that in a chemical change




heat is supplied
B


a reversible process
C


a new substance is f
D

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