MHSB - 7 - Science :: Elements, compounds and mixtures

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MSCERT-Science-Grade 7

[edit]

[Contributor - Anu Nived]

Objective: To teach the students about elements, compounds and mixtures and how they differ

Subtopics to be covered:

  1. Matter
  2. Metals / non metals / Metalloids
  3. Molecular Formula
  4. Methods of separation

Learning Outcome:

  1. Students know about elements, compounds and mixtures that we use in our daily life
  2. They know about the various separating methods to separate mixtures
  3. They can write the molecular formula of various compounds

[Contributor - Kripa S]


1. In your village, visit a place that has a fence of wire. Take few small marbles or pebbles along with you. Throw them all in one go into the fence. You will observe that few of the pebbles will pass through the fence to the other side, and few will get hit and bounce back. This is how the electrons also move.


Term' 'Transliterated Term' 'Translated Term'
Matter मॅटर द्रव्य
Substance सब्स्टंस पदार्थ
Mass मास वस्तुमान
Mixtures मिक्स्चर्स मिश्रणे
Condensation कंडंसेशन संघनन
Molecule मोलेक्यूल रेणू
Atom अॅटम अणू
Elements एलेमेंट्स मूलद्रव्ये
Decomposition डिकंपोजिशन विघटन
Metal मेटल धातू
Non metal नॉन मेटल अधातू
Ductility डक्टिलिटी तन्यता
Heat हीट विद्युत
Electricity इलेक्ट्रिसिटी उष्णता
Metalloids मेटल्लोईड्स धातुसदृश
Combustion कंबश्शन ज्वलन
Adulteration अडल्टरेशन भेसळ
Straining स्ट्रेनिंग गाळणे
Sifting सिफ्टिंग चालणे
Picking पिक्किंग वेचणे
Sorting सॉर्टिंग निवडणे
Winnowing विनोविंग पाखडणे
Magnet Combing मॅग्नेट कोंबिंग चुंबक फिरवून निवडणे
Sublimation सब्लिमेशन संप्लवन
Vaporize वेपोराइज वाफ होणे
Purification प्युरिफिकेशन शुद्धीकरण
Impure इंप्यूर अशुद्ध
Separation सेपरेशन विलगीकरण
Immiscible इम्मिसिबल एकमेकांत न विरघळणाऱ्या
Centrifugation सेंट्रिफ्युगेशन अपकेंद्री पद्धत
Turbid water टर्बिड वॉटर गढूळ पाणी
Insouble इंसोल्युबल अविद्राव्य
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