Which term describes a heterogeneous mixture whose components are visibly distinct?

• A. Mixture
• B. Mechanical mixture
• C. Pure substance
• D. Element

Answer: (B)

The key idea is that you can see the different parts of the mixture. When a mixture is heterogeneous in a way that its components are visibly distinct, it’s called a mechanical mixture. The name highlights that the separate pieces can be identified and separated by simple, physical means (like picking out the nuts from trail mix or choosing grains of sand from pebbles). This contrasts with a pure substance, which has a uniform composition throughout, and with an element, which is made of only one kind of atom. While a general “mixture” can refer to either homogeneous or heterogeneous blends, the term that specifically describes a heterogeneous mixture with visible components is mechanical mixture.