Question

unswer the following questions.
Differentiate between a pure substance and a mixture. Give two examples
of each.​

Answer 1

Answer:

Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure. While, a mixture is the physical combination of two or more substances in which the identities are retained and are mixed in the form of solutions, suspensions and colloids.

Example of pure substance is diamond and water. While example of mixture is honey and muddy water.  

Hope it helps you.

Answer 2

Answer:

pure substance                                                      

> Pure substances are defined as substances that are made of only one type of atom or molecule.

>The physical properties of a pure substance include well-defined melting and boiling points.

> Example- all elements such as Hydrogen gas.

Gold metal.

Sugar (sucrose)

Baking soda (sodium bicarbonate)

Ammonia.

Diamond.

Copper wire.

Silicon chip.

mixture

> a substance made by mixing other substances together.

> Physical properties such as boiling point or melting point of pure substances are invariant.

> Examples are: mixtures of sand and water or sand and iron filings, a conglomerate rock, water and oil, a portion salad, trail mix, and concrete (not cement).