Are fruits and vegetables chemical compounds or mixtures?

Question

Is a grapefruit considered a pure substance, not element, but compound?

If you know could you please also tell me whether its homogeneous or heterogeneous?

Answer 1

Fruits and vegetables are comprised of many different chemical compounds (starches, sugars, proteins, etc.) .  Therefore, fruits and vegetables are mixtures.  Also, this mixture of compounds is not truly uniform throughout.  For example, in a hot pepper, more capsaicin (the hot stuff-owwwwwch!) is located in the placental tissues (where seeds hang out) of the pepper.  As a result, fruits and vegetables would be classified as heterogeneous (non-uniform) mixtures.

So, grapefruit is not a pure substance, an element, or a compound.  Elements are found on the periodic table.  Compounds are comprised of two or more elements.  Grapefruit are comprised of many compounds in a non-uniform fashion.  They are homogeneous mixtures.