MHSB - 7 - Science :: Physical and Chemical Changes

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[Contributor - Suman Saurabh]

Dear Volunteer,

Please find below the detailed lesson plan and PPT for this chapter in the language mentioned against the respective link. While the lesson plan will give an overall flow of the lesson, the PPT will include lesson flow as well as the presentations for the class.

https://drive.google.com/open?id=1pI0H19C9jZLRaWLxWAuBBAAjBNHoWxui (Lesson Plan - English)

https://drive.google.com/open?id=1qXGOQ38m_bP_2zS2TYbGaUiOZArpfeQb (PPT - English)

You may use the content as it is or download and modify them to suit the students requirements.

If you feel any major modifications or additions are carried out by you in the form of adding any new activity, presentations, videos etc. we request you to send the modified version to submitcontent@evidyloka.org for enabling upload the modified version.

The worksheets of the lesson can be accessed from the worksheet tab.

Kindly rate the lesson plan and share your suggestions and comments on the lesson plan in the comments box below. Your valuble suggestions and comments will help us to improve the content.

They can give examples of various changes (periodic, non periodic, chemical, physical,etc.) happening around us.

[Contributor - Kripa S]

http://cart.ebalbharati.in/BalBooks/pdfs/701020012.pdf#page=97 (Marathi)

http://cart.ebalbharati.in/BalBooks/pdfs/703020012.pdf#page=97 (English)

[Contributor - Kripa S]

https://www.youtube.com/watch?v=BgM3e8YZxuc (Physical vs chemical change)

[Contributor - Suman Saurabh]

Lesson Plan version 1.1 videos

https://www.youtube.com/watch?v=CzDGBE2gkOs (natural and manmade changes)

https://www.youtube.com/watch?v=oJ8WoHbdz1U (Slow and fast changes)

https://www.youtube.com/watch?v=VkeWR7wU4oE (reversible and irreversible changes)

https://www.youtube.com/watch?v=2IGp0YEF2uY (Reversible and irrreversible changes)

https://www.youtube.com/watch?v=PRbMEtUMuNk (periodic and non periodic changes)

https://www.youtube.com/watch?v=BgM3e8YZxuc (physical and chemical changes)

[Contributor - Anu Nived]

http://image.slidesharecdn.com/physical-and-chemical-change-1224466582409274-8/95/physical-and-chemical-change-6-728.jpg (chemical change) https://image.slidesharecdn.com/physical-and-chemical-change-1224466582409274-8/95/physical-and-chemical-change-5-728.jpg?cb=1224441397 (chemical change) http://image.slidesharecdn.com/physical-and-chemical-change-1224466582409274-8/95/physical-and-chemical-change-8-728.jpg (physical change)

[Contributor - Arshea Bimal]

1. Cut a piece of paper in four square pieces. Cut each square piece further into four square pieces. Keep these pieces on the floor or a table so that the pieces acquire the shape of the original piece of paper.Can you join the pieces back to make the original piece? Is there a change in the property of the paper? 2.Group students to play this game: a) Let one name a common process (eg: rusting of iron) b) The other will decide if it is a physical or chemical change. The second student an now pick another and name another process. continue...

[Contributor - Suman Saurabh]

Lesson Plan version 1.1 activities

1. Hold the middle of glass bangle above a candle flame. Observe as it heats, it gets soft and shape can be changed.

2. Keep some water in a glass. Keep adding sugar. Stir the water. The sugar mixes in water. Keep adding sugar and stirring. At one stage no more sugar will dissolve in the water. At this stage the solution becomes saturated. Now start heating the water. You will observe that more sugar starts dissolving in water. After dissolving more sugar start to cool the water. You will see sugar crystallized at the bottom of the glass once the water cools down. Note down all the changes that occurred during this process and classify them into different categories.

[Contributor - Aditi Joglekar]

https://drive.google.com/open?id=0BzNF2YyqQxJ-OV9NTTdDNU1aakk

[Contributor - Suman Saurabh]

https://www.scribd.com/presentation/355262562/LESSON-13-changes-that-cause-harmful-and-useful-to-the-environment-observation-pptx

Lesson Plan version 1.1 PPT

https://drive.google.com/open?id=1qXGOQ38m_bP_2zS2TYbGaUiOZArpfeQb

[Contributor - Shahnawaz Pathan]

Term	Transliterated Term	Translated Term
Surroundings	सराउंडिग्ज	सभोवताली
Rusting	रस्टिंग	गंजणे
Accord	अकोर्ड	आपोआप
Useful changes	यूजफुल चेंजेस	उपयुक्त बदल
Harmful changes	हार्मफुल चेंजेस	हानिकारक बदल
Bursting of balloon	बर्स्टिंग आॅफ बलूनन	फुगा फुटणे
Ripening of fruit	रायपनिंग आॅफ फ्रूट	फळ पिकणे
Wax	वॅक्स	मेण
Reversible changes	रिवर्सिबल चेंजेस	परिवर्तनीय बदल
Periodic changes	पिरिओडिक चेंजेस	आवर्ती बदल
Non periodic changes	नॉन पिरिओडिक चेंजेस	अनावर्ती बदल
Composition	कम्पोजिशन	संघटन
Physical change	फिजिकल चेंज	भौतिक बदल
Chemical change	केमिकल चेंज	रासायनिक बदल
Evaporation	इवॅपोरेशन	बाष्पीभवन
Water cycle	वॉटर सायकल	जलचक्र
Burning	बर्निंग	जाळणे
Breaking	ब्रेकिंग	तोडणे
Tripod	ट्रायपॉड	तिवई
Corrosion	करोजन	क्षरण
Moisture	मोइस्चर	आर्द्रता
Coat	कोट	लेप
Distnguish	डिस्टिंग्विश	फरक करणे
Yoghurt	योग्हर्ट	दही
Cracker	क्रॅकर	फटाके
Occurance	आॅकरंस	होणे
Revolution	रेवल्यूशन	परिभ्रमण
Stretching	स्ट्रेचिंग	ताणणे
Canned food	कॅन्ड फूड	हवाबंद अन्नपदार्थ
Utensils	युटेंसिल्स	भांडी
Tinned	टिंड	कल्हई करणे
Breeze	ब्रीज	मंद वारा
Lightning	लायटनिंग	विजा चमकणे