Question

a substance which cannot split up into two or more simpler substances by physical or chemical methods is called a/an
a compound
b solution
c mixture
d element

Explanation:

• A compound can be split into simpler substances (elements) by chemical methods.
• A solution is a homogeneous mixture and can be separated into its components by physical methods (e.g., evaporation).
• A mixture can be separated into its components by physical methods.
• An element is a pure substance that cannot be split into two or more simpler substances by physical or chemical methods.

Answer:

d. Element