Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound? - Science

Oxygen is very essential for us to live. It forms 21% of air by volume. Is it an element or compound?

One Line Answer

Oxygen is an element. It contains the atoms of oxygen of the same kind.

shaalaa.com

Is there an error in this question or solution?

Chapter 10: Matter Around Us - Exercise [Page 124]

Chapter 10 Matter Around Us
Exercise | Q VI. 2. | Page 124

Write the Chemical Name of the Following and Also Give Their Molecular Formulae:

Sand

Name: a non-metal which is lustrous

Name: a Liquid Metal

What is meant by H₂0 and 3H₂O

Give one use of the following substance:
Iron

Give the name of the radical - NO₃

State four differences between – elements, compounds and mixtures with suitable examples.

Select the correct answer to the statement given below:

A compound containing carbon, oxygen and calcium.

Select the correct answer from the choice given below to complete the sentence :

An example of a monoatomic molecule is ___________.

Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.

Name a non-metal which is required for combustion.