Define the following

Define the following B) Define, i) Cation. ii) Valency. iii) Atomic mass number. iv) Law of conservation of matter. v) Avogadro's number.

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1) positively charged ion
2)combining capacity of elements
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3)mass number is sum of protons and neutrons
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1. Positively charged particles are called cations.
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2. The combining capacity of elements is known as its valency.
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4.total mass before reactant = total mass after solution .
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