define an atom , molecules, elements, compounds, reactants and products
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atom is the small part of substance which does not exist in free state.
group of atom is known as molecules.
element is smallest part of substance which does not break down.
compound is a pure substance is formed after chemical reaction.
a substance that takes part in and undergo change during a reaction.
after reaction the new substance is formed is known as product.
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group of atom is known as molecules.
element is smallest part of substance which does not break down.
compound is a pure substance is formed after chemical reaction.
a substance that takes part in and undergo change during a reaction.
after reaction the new substance is formed is known as product.
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nikshitha06:
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compound is a mixture of different elements
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