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प्रश्न
Classify the following substances into elements and compounds
Mercury, sulphur, sugar, water, sand, gold, carbon, oxygen, alcohol, iron, marble, baking soda.
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उत्तर
Element: Mercury, sulphur, gold, carbon, oxygen, iron.
Compound: Sugar, water, sand, alcohol, marble, baking soda.
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संबंधित प्रश्न
Differentiate between:
Homogenous and heterogenous substances
State four differences between compounds and mixtures.
Define: Atom
Fill in the blank
A metal which is a poor conductor of electricity is _______.
Tick (√) the correct alternative from the choice given for the following statement
The hardest naturally occurring substance
Give the name of the radical - OH
Give the name of the radical - SO4
Complete the statement given below by filling in the blanks with the correct words.
Atom contains ________ , with positively charged _____.
Give a reason for the following statement :
Brass & bronze are examples of mixtures, while copper sulphate & lead nitrate are examples of compounds.
Why are utensils made up of aluminium and brass?
