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प्रश्न
Define: Formula
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उत्तर
Formula: Formula is a short way of representing the molecule of an element or a compound
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संबंधित प्रश्न
Give one example for the following types of mixtures :
solid-liquid heterogenous mixture.
Name A substance used as an insulator.
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 ___________
Give the name of the radical - SO4
Complete the statement given below by filling in the blank with the correct word.
Element ______ has the symbol derived from its Latin name ‘Argentum’
State four differences between – elements, compounds and mixtures with suitable examples.
Give a reason for the following statement:
Components in a mixture are present in varying proportions and not in a fixed proportion.
With reference to elements – define the term ‘molecule’. Give two examples each of a monoatomic, diatomic & polyatomic molecule.
Give an example for the elements derived from their Latin names.
Give two example of elements.
