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VGS PUBLICATION-BRILLIANT-ATOMS ,MOLECULES AND CHEMICAL REACTIONS-EXERCISE
- Do you think that a chemical reaction has taken place in the flask? Gi...
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- What difference do you observe in percentage of copper, carbon and oxy...
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- How do we write the symbols for calcium, chlorine, chromium ?
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- Would you be able to recognise the elements of the table -2, have symb...
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- Why do some elements be monoatomic?
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- Why do some elements form diatomic or triatomic molecules? Why do elem...
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- What is valency?
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- Can you write the formula of carbon dioxide and carbon monoxide? Try ...
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- How many molecules are there in 18 grams of water? How many atoms are ...
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- Did you notice the colour coating on silver and copper articles?
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- How did the element hydrogen get its name?
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- What is an atom?
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- What is an Avagadro number? What is its value?
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- Father of modern chemistry is……..
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- What is the law of conservation of mass according to chemical equation...
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- Who proposed Law of conservation?
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- State the following law of constant proportions.
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- Define chemical combination and give an example.
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- Give an example for decomposition reaction.
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- What is a thermal decomposition reaction ? Give an example.
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