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प्रश्न
Differentiate between elements and compounds.
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उत्तर
| Elements | Compounds |
| An element is the simplest substance | A compound is a chemical substance formed by the combination of two or more elements |
| Elements combine to form compounds | Compounds can be split into elements |
| Atoms are the fundamental particle of an element | Molecules are the fundamental particles of a compound |
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संबंधित प्रश्न
Is food that we eat a mixture ?
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Vinegar
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 ________.
Write the names of elements from the following symbol:
Zn
Select the correct answer from the choice in the bracket.
The least reactive metal.
Represent with the help of a simple chart how matter is classified into pure or impure substances & further into elements, compounds & mixtures, with elements further segmented.
Give an example of two liquids that form heterogeneous mixtures.
Elements are the______ form of pure substances.
Classify the following as elements and compounds.
Water, Common salt, Sugar, Carbon dioxide, Iodine and Lithium
