Video by EduDeck – The Learning App – Samacheer Kalvi via YouTube
Source

Matter Around Us Book Back Questions & Answers, Exercises, Solutions, Tests, Quizzes, Videos and Podcasts for Class 7 | Unit 3 | Chemistry | Science | Samacheer Kalvi – English Medium

7th Standard Samacheer Kalvi Chemistry New Book Back Questions & Answers: https://www.thelearning.app/samacheer-kalvi-english-medium/class-7/science-2/matter-around-us-2/exercises

Podcasts: https://www.thelearning.app/samacheer-kalvi-english-medium/class-7/science-2/matter-around-us-2/videos

Tests & Quizzes: https://www.thelearning.app/samacheer-kalvi-english-medium/class-7/science-2/matter-around-us-2/tests

Flash Cards: https://www.thelearning.app/samacheer-kalvi-english-medium/class-7/science-2/matter-around-us-2/flashcards

Visit https://www.thelearning.app by EduDeck. Learn, Practice & Evaluate From Anywhere.

00:00 Introduction
00:13 Choose the correct answer
03:54 Fill in the blanks
07:14 Fill in the blanks (Anology)
08:27 True or false
09:26 Assertion and Reason
12:00 Rewrite the sentence in correct form

Questions answered in this video –

1. Which of the following is an example of a metal?

2. Oxygen, hydrogen, and sulphur are examples of which of the following?

3. Which of the following is a short and scientific way of representing one molecule of an element or compound?

4. The metals which is a liquid at room temperature

5. An element which is always lustrous, malleable and ductile

6. The smallest particle of matter that can exist by itself ______

7. A compound containing one atom of carbon and two atoms of oxygen is ______

8. ______ is the only non-metal conducts electricity

9. Elements are made up_____ of kinds of atoms.

10. ______of some elements are derived from Latin or Greek names of the elements.

11. There are______ number of known elements.

12. Elements are the______ form of pure substances

13. The first letter of an element always written in letter______

14. Molecule containing more than three atoms are known as______

15. ______is the most abundant gas in the atmosphere.

16. Mercury: liquid at room temperature:: Oxygen:_____

17. Non metal conducting electricity:______ :: Metal conducting electricity: Copper

18. Elements: combine to form compounds::Compounds:_____

19. Atoms: fundamental particle of an element:______: : fundamental particles of a compound

20. Two different elements may have similar atoms

21. Compounds and elements are pure substance.

22. Atoms cannot exist alone; they can only exist as groups called molecules.

23. NaCl represents one molecule of sodium chloride

24. Argon is mono atomic gas.

25. (A): Oxygen is a compound.. (R): Oxygen cannot be broken down into anything simpler

26. (A): Hydrogen is an element.. (R): Hydrogen cannot be broken down into anything simpler

27. (A): Air is a compound.. (R): Air consists of carbon dioxide

28. (A): Air is a mixture of elements only.. (R): Only nitrogen, oxygen and neon gases exist in air

29. (A): Mercury is solid in room temperature M.. (R): Mercury is a non-metal

30. Elements contains two or more kinds of atoms and compounds contains only one kind of atoms.

Go to Source