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A pure substance's composition is known.

An element is the purest form of matter, consisting of only one type of material. The smallest particles that make up an element are called atoms.

A compound is made up of atoms from two or more distinct elements that have been chemically bonded in equal amounts.

In a mixture, two or more components are physically mixed but not chemically joined.

The composition of a homogeneous mixture is uniform, whereas the composition of a heterogeneous mixture is not.

In a mixture, the chemical properties of the components remain unchanged.

(a) Because the particles in tomato ketchup are not evenly combined, it is a heterogeneous mixture. It doesn't have a consistent make-up.

A substance is frequently confused with a homogeneous mixture, although the major difference is proportion.

(b) The composition of a hard-boiled egg is not uniform. The yellow and white parts have different compositions. As a result, it's a heterogeneous combination.

Although they may appear to be the same, substances are made up of distinct compositions. Homogeneous mixtures, on the other hand, have no set composition and can contain limitless amounts of any component.

C) Varied components of a tortilla soup have different compositions. As a result, it's a heterogeneous combination.