Classify the following as elements, compounds, and mixtures: water, hydrogen, ink, seawater, salt, sand, and soft drink.

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Solution

Element - It is a pure substance made up of atoms of the same kind and cannot be separated by any chemical method.
A compound is a pure substance made by a chemical reaction of two or more different elements in a fixed proportion.
Mixture - When two or more substances are mixed physically in any variable proportion in such a way that they retain their individual properties is called a mixture.
SUBSTANCE
ELEMENT/COMPOUND/MIXTURE
Water
Compound
Hydrogen
Element
Ink
Mixture
Seawater
Mixture
Salt
Compound
Sand
Mixture
Soft drink
Mixture

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