MEDIUM
7th ICSE
IMPORTANT
Earn 100

What are non-metals? Are non-metals good conductors of heat and electricity? 

Important Questions on Elements, Compounds and Mixtures

MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q 2
Which elements are required to make sugar? Also give the chemical formula of sugar. 
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q 3
'The properties of a compound are the same as the properties of the elements that make up the element". Is this statement correct? If not, correct it. 
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q 4
Name a few elements whose names start with Latin names. 
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q 5
What do you mean by chemical symbols for elements?
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q 6

Write down the symbols for each of these elements.

Potassium, sodium, chlorine, gold, silver, aluminium, calcium, cobalt

HARD
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q 7

Write down the name of the elements or compounds for each of these symbols.

Ca, MgO, CuS, P, S, Sb, He, Zn, ZnO

MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q 8

Write molecular formula for each of the following.

Chlorine, oxygen, common salt, water, nitrogen, hydrogen, lead sulphide, calcium oxide.

MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 3 - Elements, Compounds and Mixtures>EVALUATE YOUR UNDERSTANDING>Q 9
What do you understand by the term 'atomicity'? Give the atomicity of sulphur.