Is Matter Around Us Pure-True/False

These 25 True/False questions are crafted to help learners explore fundamental concepts from "Is Matter Around Us Pure." The set spans the definitions and differences between mixtures and pure substances, examining how substances are classified, identified, and separated in the real world. Key ideas such as homogeneity, heterogeneity, solutions, suspensions, colloids, and methods of physical separation are checked in clear and simple statements. By answering and reflecting on the explanations, students strengthen understanding of how air, water, alloys, and other materials around us are composed of different combinations of substances. The set also addresses how physical and chemical properties are used to distinguish elements, compounds, and mixtures, and covers practical classroom science such as evaporation, filtration, and distillation. These questions support quick revision and help clarify everyday phenomena through the lens of chemistry, building confidence for exams and foundational inquiry skills for the future.

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Is Matter Around Us Pure-True/False

by Academia Aeternum

1. A pure substance contains only one type of particle.
2. Mixtures can have variable composition.
3. Air is a pure substance.
4. Salt dissolved in water forms a homogeneous mixture.
5. A compound can be separated by physical methods.
6. Alloys are mixtures.
7. In a suspension, particles settle down on standing.
8. Elements and compounds are both considered pure substances.
9. Mixtures always have fixed boiling and melting points.
10. Filtration can separate salt from water.
11. Colloids are heterogeneous in appearance.
12. Components of a mixture retain their properties.
13. Evaporation is suitable for separating volatile solutes from non-volatile solvents.
14. Sugar is a compound.
15. Milk is an example of a solution.
16. A homogeneous mixture has the same composition throughout.
17. Suspension particles are too small to be seen without a microscope.
18. A solution always contains a solute and a solvent.
19. Tap water is a pure substance.
20. Distillation is a process meant for separating mixtures based on boiling points.
21. All mixtures are either homogeneous or heterogeneous.
22. Sand in water forms a suspension.
23. A compound contains elements combined in a fixed proportion.
24. Mixtures always have uniform appearance.
25. Physical methods can separate the components of a mixture.

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