MEDIUM
7th ICSE
IMPORTANT
Earn 100

Write the symbols of any five elements whose name starts with the letter 'C'.

Important Questions on Elements, Compounds and Mixtures

EASY
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>ASSESS YOURSELF>Q 1
What is a molecule?
EASY
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>ASSESS YOURSELF>Q 2
Name two polyatomic molecules that have 4 atoms in them.
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>ASSESS YOURSELF>Q 3
How can you show a compound that can be broken down into its constituent elements?
EASY
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>ASSESS YOURSELF>Q 4
Define metalloids. Give examples of metalloids.
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>ASSESS YOURSELF>Q 5

Write the valencies of the elements given below:

Beryllium, fluorine, silicon, argon, calcium.

MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>THINK ZONE>Q 1
How can you justify that air is a mixture not a compound?
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>ASSESS YOURSELF>Q 1
What does the formula of compound signifies?
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>ASSESS YOURSELF>Q 2

Write the formula of the following compound.

Sugar