Chemistry/Grade 10A/11G
The Mole / worksheet-1
Name/…………………………………
Answer the following questions.
Q1- Define the next terms
The mole
…………………………………………………………………………………….
Avogadro’s number
…………………………………………………………………………………….
Q2- If 1 mol (of any substance) = 6.02 x 1023 particles
then write 2 conversion factors for this relation.
…………………………………
………………………………..
=
……………………………………….
……………………………….
Q3- In the next table decide which type of particles does each substance
made up of from the largest to the smallest ?
largest --------------- smallest
A Covalent
compound
An Ionic compound
An element
largest --------------- smallest
Methane gas CH4
Glucose C6H12O6
Sodium chloride
NaCl
Iron Fe
Q4- Determine the number of atoms in each element from the next list
moles
2.5 mol of Zn
Calculation
2.5mol Zn
……………….
………………..
3.2 mol of Cu
…………………
……………….
………………..
0.25 mol of He
…………………
……………….
………………..
Particles(Atoms)
Q4- Determine the number of molecules in each substance from the
next list.
moles
1.25 mol of
CH4
Calculation
……………….
Particles(molecules)
……………….
………………..
3.2 mol of
C6H12O6
…………………
……………….
………………..
Q5- Determine the number of moles in each substance from the next
list.
particles
1.807x 1024
atom of Ar
Calculation
………………
……………….
………………..
1.5055x1023
molecules of
H2O
…………………
……………….
………………..
moles