Mixture, Compounds and Atoms

1. This type of mixture has a composition that is not uniform.

Homogeneous

Heterogeneous

2. Atoms are composed of :

Electrons, neutrons, protos

Electrons, neutrons, protons

None of above

3. This is the liquid which passes through filter paper during filtration.

Filtrate

Residue

4. Which of the following particle has a positive charge?

Neutrons

Protons

Electrons

5. Which of the following is a pure substance made up of one type of atoms?

An element

Mixture

Compound

6. What is Filtration?

Separating an insoluble substance from a liquid by passing the mixture through porous paper.

Heating to separate a soluble substance such as table salt from water

None of above

7. Which of the following particle has no charge?

Neutrons

Protons

Electrons

8. Atoms ____ to have a filled outermost energy level

Split

Bond

9. An impure substance made up of two or more elements or compounds both mechanically mixed into any proportion and can be further sub-divided by physical means is a

Mixture

Compound

10. This type of mixture has the same composition through out.

Homogeneous

Heterogeneous

11. A negative ion is a:

Anion

Cation

12. A pure substance made up of two or more elements chemically combined in a fixed proportion can be sub-divided by chemical means only is a

Mixture

Compound

13. Most atoms form bonds using only the electrons in their ____ energy level.

Outermost

Innermost

14. Which bond exchanges electrons?

Covalent

Ionic

15. Atoms bond by ____ electrons.

Gain

Lose

Share

All of above

16. The first energy level is closest to the nucleus and can hold up to ____ electrons.

2

4

8

17. Which of the following describes what happens when an atom becomes an ion with a 2– charge?

The atom gains 2 electrons.

The atom loses 2 electrons.

The atom has a full outer shell

18. Separating funnel

Separating an insoluble substance from a liquid by passing the mixture through porous paper.

Heating to separate a soluble substance such as table salt from water

A device to separate heavy liquids(eg. water) from lighter liquids(eg. kerosene)

19. What is Distillation?

A combination of 2 processes- evaporation followed by condensation(eg. to make pure water from seawater

Heating to separate a soluble substance such as table salt from water

Separating an insoluble substance from a liquid by passing the mixture through porus paper.

20. The second energy level can hold up to ____ electrons.

2

4

8

21. Which particle orbits the nucleus?

Neutrons

Protons

Electrons

22. Compounds can be separated by:

Chemical means only

Physical means only

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Mixture, Compounds and Atoms

1. This type of mixture has a composition that is not uniform.

2.

What first name or nickname would you like us to use?

2. Atoms are composed of :

3. This is the liquid which passes through filter paper during filtration.

4. Which of the following particle has a positive charge?

5. Which of the following is a pure substance made up of one type of atoms?

6. What is Filtration?

7. Which of the following particle has no charge?

8. Atoms ____ to have a filled outermost energy level

9. An impure substance made up of two or more elements or compounds both mechanically mixed into any proportion and can be further sub-divided by physical means is a

10. This type of mixture has the same composition through out.

11. A negative ion is a:

12. A pure substance made up of two or more elements chemically combined in a fixed proportion can be sub-divided by chemical means only is a

13. Most atoms form bonds using only the electrons in their ____ energy level.

14. Which bond exchanges electrons?

15. Atoms bond by ____ electrons.

16. The first energy level is closest to the nucleus and can hold up to ____ electrons.

17. Which of the following describes what happens when an atom becomes an ion with a 2– charge?

18. Separating funnel

19. What is Distillation?

20. The second energy level can hold up to ____ electrons.

21. Which particle orbits the nucleus?

22. Compounds can be separated by: