Classify each of the substances as a mixture, a compound, or an element. Mixture
Compound
Element
Answer Bank
methane
vinegar
water
steel
milk
helium
aluminum
table sugar
table sugar

Explanation:

An element is a distinct substance that cannot be split - up into simpler substances. Such substances consist of only one kind of atom.

From the list, the elements are:

helium

aluminum

A compound is substance composed of two or more kinds of atoms or elements joined together in a definite grouping. The properties of a compound are distinct and different from those of the individual elements that are combined in its make - up.

methane

water

Table sugar

A mixture is a substance made up of indefinite composition. The constituents reacts differently to changed conditions. They are easily separated into constituents by physical methods.

Vinegar

Steel

Milk

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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