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प्रश्न
Elements are the______ form of pure substances.
उत्तर
Elements are the simplest form of pure substances.
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संबंधित प्रश्न
Choose the most appropriate answer
A solvent of Iodine is
What are the different types of mixtures ?
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Vinegar
Give two examples of Metalloids.
Define: Molecule
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name – a gas with a pungent, choking odour which is lighter than air
Elements are classified into – Metals – Non-metals – Metalloids – Noble gases. State which of A, B, C, D is a –
1. Metallic element
2. Non-metallic element
3. Metalloid
4. Noble gas.
A: Is non-malleable, non-ductile & a poor conductor of electricity ___________
B: Has lustre, is malleable and ductile & a good conductor of heat ___________
C: Is unreactive and inert and present in traces in the air _________
D: Shows properties of both metals and non-metals ___________
Complete the statement given below by filling in the blank with the correct word.
From the elements nitrogen, chlorine, bromine, the element present in the atmosphere is ________.
Give a reason for the following statement :
Brass & bronze are examples of mixtures, while copper sulphate & lead nitrate are examples of compounds.
Matter is its simplest form is called ______.
