1. Gove three differences between: a) metals and non-metals b) elements and compounds

Question

1. Gove three differences between: 

a) non-metals and metals 

b) elements and compounds 

Answer 1

Differences Between Metals And Non-metals-

Metals	Non-metals
These are solids at room temperature except mercury	These exist in all three states
These are very hard except sodium	These are soft except diamond
These are malleable and ductile	These are brittle and can break down into pieces
These are shiny	These are non-lustrous except iodine
Electropositive in nature	Electronegative in nature
Have high densities	Have low densities

Difference Between Element and Compound-

Elements	Compounds
Contains only one kind of atoms.	Contains more than one kind of atoms.
It is a pure substance.	It is not a pure substance.
Elements cannot be broken down further into simpler substances by chemical methods.	Compounds can be broken down further into simpler substances by chemical methods.
Elements have definite physical and chemical properties.	Compounds have definite physical and chemical properties.
Examples for elements: Oxygen(O), Hydrogen(H), Chlorine(Cl), Sodium(Na) etc.	Examples for compounds: Sodium chloride(NaCl), Water(H2O) etc.