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Answer 1

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1 Vocabulary. Element: a substance that is made up of only one type of atom. Compound:a substance that is made up of more than one type of atom bonded together. Mixture: a combination of two or more elements or compounds which have not reacted to bond together; each part in the mixture retains its own properties.

2 As nouns the difference between distillate and residue

is that distillate is the liquid that has been condensed from vapour during distillation; normally a purified form or a fraction of an original liquid while residue is whatever remains after something else has been removed.

3 When physical or chemical changes occur, they are generally accompanied by a transfer of energy. The law of conservation of energy states that in any physical or chemical process, energy is neither created nor destroyed. In other words, the entire energy in the universe is conserved.

4 The principle of hand picking method of separation is based on size of the particles and identification. Hand-picking depend on the diverse size of the two segments blended which can be picked by utilizing hands just or by separating through the sifter.

5 definition, a pure substance or a homogeneous mixture consists of a single phase. A heterogeneous mixture consists of two or more phases. When oil and water are combined, they do not mix evenly, but instead form two separate layers.

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