chemistry - matter in our surroundings

Class 9 - Chemistry

Matter in Our Surroundings

MCQ
Q&A
Notes

To Separate a Mixture of Iron Filings and Sulphur Powder


In order to separate iron filings from sulphur powder, a horse-shoe type magnet is moved on the surface of the mixture. The iron filings are attracted by the magnet, they cling to the poles of the magnet and get separated (see Figure 56). This process has to be repeated a number of times to achieve complete separation of iron filings. Sulphur powder is not attracted by a magnet so it remains behind.
A mixture of iron filings and carbon powder can be separated by using a magnet in a similar way. And a mixture of iron filings and sand can also be separated by using a magnet. A carpenter can also separate iron nails from saw-dust by using a magnet.This is because iron nails stick to the magnet but saw-dust does not. In industries, the impurity of iron present in several substances is removed by the use of magnets.

--- >>>

Notes


Matter in Our Surroundings - Notes
1. 7. Non-Metals may be Solid, Liquid or Gases at the Room Temperature.
Show Notes
2. 8. Metals Generally Have High Melting Points and Boiling Points.
Show Notes
3. 5. Non-Metals are Generally Soft
Show Notes
4. 6. Non-Metals are Not Strong. They Have Low Tensile Strength.
Show Notes
5. 9. Metals Have High Densities.
Show Notes
6. 4. Non-Metals are Not Lustrous (Not Shiny). They are Dull in Appearance.
Show Notes
7. Compounds
Show Notes
8. 6. Metals are Usually Strong. They Have High Tensile Strength.
Show Notes
9. 10. Metals are Sonorous.
Show Notes
10. 4. Metals are Lustrous (or Shiny), and can be Polished.
Show Notes
11. 5. Metals are Generally Hard
Show Notes
12. 1. Non-Metals are Not Malleable. Non-Metals are Brittle.
Show Notes
13. 2. Non-Metals are Not Ductile.
Show Notes
14. 11. Non-Metals Have Many Different Colours.
Show Notes
15. 1. Metals are Malleable.
Show Notes
16. 3. Non-Metals are Bad Conductors of Heat and Electricity.
Show Notes
17. To Separate the Salt-Water Mixture (or Salt-Solution)
Show Notes
18. Pure Substances : Elements and Compounds
Show Notes
19. Metals, Non-Metals and Metalloids
Show Notes
20. 3. Metals are Good Conductors of Heat and Electricity.
Show Notes
21. 8. Non-Metals Have Comparatively Low Melting Points and Boiling Points
Show Notes
22. Impure Substances: Mixtures
Show Notes
23. 9. Non-Metals Have Low Densities.
Show Notes
24. 10. Non-Metals are Not Sonorous.
Show Notes
25. 3. Separation by a Magnet
Show Notes
26. 2. Separation by a Separating Funnel
Show Notes
27. 2. Metals are Ductile.
Show Notes
28. Concentration of a Solution
Show Notes
29. 1. Separation by a Suitable Solvent
Show Notes
30. Chemical Formula for daily use material
Show Notes
31. Metals
Show Notes
32. 7. Metals are Solids at the Room Temperature
Show Notes
33. 4. Purification by Crystallisation
Show Notes
34. 11. Metals Usually Have a Silver or Grey Colour
Show Notes
35. Separation OF Mixtures
Show Notes
36. 5. Separation by Chromatography
Show Notes
37. Suspensions
Show Notes
38. Properties of a Suspension
Show Notes
39. Solutions, Suspensions And Colloids
Show Notes
40. 2. Separation by Sublimation
Show Notes
41. Experiment to Obtain Coloured Component (Dye) From Ink
Show Notes
42. Separation Of Mixture Of Two (Or More) Liquids
Show Notes
43. 2. Separation by Centrifugation
Show Notes
44. Non-Metals
Show Notes
45. Comparison Among the Properties of Metals and Non-Metals
Show Notes
46. Mixtures
Show Notes
47. 1. Separation by Filtration
Show Notes
48. 1. Separation by Fractional Distillation
Show Notes
49. The Case of Alloys
Show Notes
50. Metalloids
Show Notes
General Knowledge Quiz
3001 Bizarre Facts
Dictionary
Elementary English Grammar Test
Standard English Grammar Test
Advanced English Grammar Test
Daily English Quiz
English Test
Grammar Examination
ESL / EFL Test
Grammar Test
Antonyms
Synonyms
Homonyms
Vocabulary Examination
Word Analogy
Vocabulary Flashcards
Idioms
Idioms Quiz
Quantitative Aptitude Test
iQ Quiz Game
Verbal Reasoning Quiz - Mind Game
English Question Answer
Vocabulary Game 1
Vocabulary Game 2
Scramble Word Game
Common Mistakes
Confusing Words
Basic English Usage
English Grammar
Prepositions
English Phrases
Learn English
Word Game
Interview Questions and Answers
Educational Quiz Games