WorksheetsChemistry 9th Grade
Total questions: 12
Worksheet time: 18mins
What are the elements that 'Aristotle' found as building blocks of all substances?
Fire, water, air and earth
Fire, air, earth and plasma
Air, earth, water and plasma
Fire, water, earth and plasma
Which one of the symbols is NOT matching with other elements?
(Hydrogen, Litium, Carbon, Oxygen)
H
Li
Ne
O
Which one of the compounds do not match with their commonly used names?
Ammonia- NH3
Baking Soda- NaHCO3
Slaked Lime- Ca(OH)2
Vinegar- CH3COH
What is the name of the lab equipment?
Which one is NOT one of the goals of alchemy?
to turn base metals to gold
to achieve rejuvenation and perhaps immortality
using trial and error method
relies on scientific theories and experimental results
Which one of the properties of 'Co' are correct?
It's an element
It's a formula
It has same type of atoms
It's a symbol
'He deduced the existence of very tiny, negatively charged particles and named them electrons' According to this information who is the person found electrons?
Rutherford
J.J. Thomson
Bohr
Dalton
What is 'Ground state'?
An electron losing energy
An electron absorving energy
Highest energy level
Lowest possible energy level
Which one of the information given is true due to '8537Rb'?
The proton number is 37
The mass number is 85
The neutron number is 48
The electron number is 85
Finding places of elements in the periodic table by using (a) .
In which classification can shiny and malleable elements might be in?
Metals
Nonmetals
Semimetals
Noble gases
Which period and group is 12Mg in?
3rd period, 3A
2nd period, 3A
3rd period, 2A
2nd period, 2A
