Question

Which of the following best describes the difference between a mixture and a pure substance? A. A mixture has the same properties throughout; a pure substance has the different properties throughout. B. A mixture has different properties throughout; a pure substance has the same properties throughout A mixture is made up of only one type of atom; a pure substance is made up of more than C. one type of atom. A mixture is made up of more than one type of atom; a pure substance is made up of only D. one type of atom.​

Answer 1

Answer:

B. A mixture has different properties throughout; a pure substance has the same properties throughout

Explanation:

We have two classes of substances which are pure and impure substances.

Pure substances are elements and compounds

Impure substance are simply mixtures.

Mixtures have the following properties;

• Their composition is indefinite i.e. they consist of two or more elements and or compounds in any proportion by mass.
• Constituents retain their identities i.e. physical properties are retained.
• Constituents react differently to changed conditions
• They can easily be separated by physical methods.