PRACTICE QUIZ 2 (Matter)

1. It is the decomposition of organic matter by bacteria and fungi.

2. Name three chemical changes of matter.

3. They haven´t got a constant volume or stable shape.

4. Temperature, mass, volume and magnetism are _________________     _________________ of matter.

5. The kilogram is the standard unit of ____________.

6. They are the smallest particles of matter.

7. Does a solid have a fixed shape?

8. We use the beaker to measure the _____________.

9. What is the matter?

10. It is a chemical change that occurs when some substances combine with oxygen.

11. Which state of matter has its molecules very close to each other?

12. When two or more substances are combined, but they are not combined chemically.

13. It is the combining of substances with oxygen to form new substances. For example, oxygen in the air can combine with iron to form rust (iron oxide).

14. Chemical change of organic matter which does not need oxygen.

15. A substance that cannot be separated by physical means.

16. They expand to occupy as much space as possible.

17. When matter changes its state, does the matter change?

18. When two or more substances are combined it is a _______________

19. Give two examples of homogeneous mixtures.

20. Name the different techniques we use to separate the components of mixtures.

21. What chemical change does occur when we get rust?

22. Can we get putrefaction with the INORGANIC matter?

23. It is used to separate liquids from a solid in mixtures.

24. In these mixtures the substances are not evenly distributed.

25. What technique would you use to separate iron from sand in a mixture?

26. What technique is used to separate different components in a liquid mixture?