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प्रश्न
Classify substances into pure and impure substances in the form of a chart or tabulation.
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उत्तर
संबंधित प्रश्न
Give Two Examples for Each of the Following: Inert Gases
Give two examples of Metalloids.
Name: Two substances used to make electric wires
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 blanks with the correct words.
From the elements – He, Br, Pt, and O; the element which is metallic is ____, an inert element is ____, forms a triatomic molecule is ____, is liquid at room temperature is_ ___.
Select the correct answer from the choice given below.
The negatively charged particles in an atom
Select the correct answer from the choice given below.
An impure substance
Classify the substances given in Fig. 2.2 into elements and compounds
Name the two elements which are derived from the country.
Reason out
Elements are called semimetals.
