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प्रश्न
Give two example of elements.
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उत्तर
Example: Hydrogen, Oxygen is made from atoms containing a single proton and a single electron.
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संबंधित प्रश्न
Classify the following substances into compounds and mixtures:
Give the symbols of: Carbon, calcium, copper, chlorine, cobalt, argon.
Give two examples of Metalloids.
Give reason: Graphite is used to make a lead of the pencils.
Answer the following question:
What do you understand by the statement: ‘metals are ductile and malleable’?
Give the name of the radical - OH
Complete the statement with the correct words.
_______ are chemicals which are hydroxide (or oxides) of ______ eg. sodium hydroxide.
Select the correct answer to the statement given below:
A compound containing carbon, oxygen and calcium.
Give a reason for the following statement :
Brass & bronze are examples of mixtures, while copper sulphate & lead nitrate are examples of compounds.
Differentiate metals and non-metals.
