Which of the following is a homogeneous mixture?

Question

Quizplus · Accepted Answer

Air is a homogeneous mixture because it is a mixture of gases (nitrogen, oxygen, carbon dioxide, etc.) that are uniformly distributed throughout. Blood is a heterogeneous mixture because it contains cells and plasma, which can be seen separately. Water is a pure substance, not a mixture. Sugar can be a homogeneous mixture if completely dissolved in water, but if there are undissolved sugar crystals, it would be a heterogeneous mixture.

Which of the Following Is a Homogeneous Mixture