Question

Paragraph 1 discusses some differences between pure substances and m
one of the following statements is true?!
A Pure substances can be separated by physical changes.
B Mixtures can be separated by physical changes.
C The chemical properties of a pure substance are variable
D The physical properties of a mixture never change

Answer 1

Answer:

B Mixtures can be separated by physical changes.

Explanation:

Mixtures are impure substances with the following features:

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

Examples of mixture are sea water, muddy water e.t.c