Name: a Liquid Metal - Chemistry

Name: a Liquid Metal

One Word/Term Answer

Mercury

shaalaa.com

Is there an error in this question or solution?

Chapter 3: Elements, Compounds and Mixtures - Exercise 3 (A) [Page 24]

Chapter 3 Elements, Compounds and Mixtures
Exercise 3 (A) | Q 5.4 | Page 24

Define: Atom

State the number of atoms of H₂SO₄

Name: Two substances used to make electric wires

Classify substances into pure and impure substances in the form of a chart or tabulation.

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

Select the correct answer from the choice given below.
An element which is a poor conductor of heat

Write an answer to the following question in your own words.

Which elements (metals and non-metals), compounds and mixtures do we use in our day-to-day life?

Select the correct answer from the choice in the bracket.

The least reactive metal.

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.