WorksheetsClassification of elements (KSSM)
Total questions: 25
Worksheet time: 15mins
Matter consists of small and discrete particles known as ....................
element
atom
molecule
compound
An atom consists of 3 subatomic particles, which are protons, neutrons and ____________.
electrodes
electrics
electrons
electronic
The nucleus of atom contains
positive electrons
negative electrons
negative protons
positive protons
Name particle A
Electron
Proton
Neutron
Atom
Ion
Name particle C
Electron
Proton
Neutron
Atom
Ion
Name particle D
Electron
Proton
Neutron
Atom
Ion
Name structure B
(a)
Charge of an electron
Negative
Positive
Neutral
100 Coulumb
Charge of a Proton
Negative
Positive
Neutral
100 Coulumb
Charge of a Neutron
Negative
Positive
Neutral
100 Coulumb
What constitutes the nucleus of an atom ?
Proton and particle
Proton and neutron
Proton and electron
Neutron and electron
What is a pure substance that cannot be broken down into any other substances by chemical or physical means (Ex. Oxygen)?
Element
Compound
Colloid
Suspension
A compound consist of two or more elements that are combined (a) .
What is a pure substance made of 2 or more elements chemically combined in a specific ratio (Ex. Water)?
Element
Compound
Mixture
Solution
Chemical formula of water
H2O
CO2
W2R
S2O
Name the method shown
(a)
In the modern periodic table no of groups is
18
7
67
118
Inert gases are located in zero group on the left side of the periodic table.
True
False
What does the element AI stand for ?
Gold
Actinium
Iron
Aluminium
