WorksheetsPreTest Basic Chemistry
Total questions: 10
Worksheet time: 5mins
What is the best definition of chemistry?
The study of living organisms
The study of matter and its changes
The study of planets and stars
The study of numbers and patterns
What is the smallest unit of an element?
Molecule
Proton
Atom
Compound
Which subatomic particle has a negative charge?
Proton
Neutron
Electron
Nucleus
Where are protons and neutrons located in an atom?
In the electron cloud
Outside the nucleus
In the nucleus
In the energy levels
What is the charge of a neutron?
Positive
Negative
Neutral
Depends on the atom
Which particle determines the identity of an element?
Neutron
Proton
Electron
Nucleus
What is the symbol for the element Carbon?
Ca
Co
C
Cr
What is the relative charge of a neutron?
0
-1
+1
+2
Which of the following is a compound?
H
O
CO₂
Na
Which is the correct formula for elemental molecule?
H₂
CO₂
H₂O
HO₂
