Quick answer: A pure substance contains only one kind of particle, while a mixture contains two or more substances that are not chemically joined. This grade 7 science quiz checks pure substances with 10 multiple-choice questions and instant feedback; every answer comes with a short explanation.
This pure substances quiz for grade 7 science has quick multiple-choice questions with instant feedback. Need a refresher first? Read the lesson or do the worksheet on pure substances.
Ten multiple-choice questions check the main ideas of this chapter. Choose the best answer each time, then read the explanation, because the wrong options come from common student mistakes.
