Question

Which of the following are 'pure substances' ?
Ice, Milk, Iron, Hydrochloric acid, Calcium oxide, Mercury, Brick, Wood, Air

Answer 1

Answer:

Mercury,Calcium Oxide and Hydrochloric acid...

pls mark me as the brainiest and of course follow me plsssss...

Answer 2

Pure substances are iron, ice, calcium oxide, hydrochloric acid, and mercury.

Explanation:

• A pure substance has particularly one type of particle. In other terms, it can be said that the pure substance is a single form of matter.  
• So, iron, ice, mercury and calcium oxide are pure substances. Because they are made up of a single type of matter. Whereas, hydrochloric acid, milk, air, and brick are impure substances due to the reason that they are made up of more than one type of matter.

You can get all the answers of Chapter 2 in the link below:

https://brainly.in/question/15041854

Few questions related to this chapter:

Name a non-metal (a) which is lustrous

(b) which is required for combustion.....

brainly.in/question/14914286

Name a metal (a) which can be easily cut with a knife

(b) which forms amalg.....

brainly.in/question/14914298