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WorksheetsAtomic Structure
Total questions: 15
Worksheet time: 8mins
The nucleus of an atom
is positively charged
is negatively charged
has no charged particles
has both positively and negatively charged particles
Electrons are found
in the nucleus
outside the nucleus
both in and outside the nucleus
Electrons are particles which
have a positive charge
have a negative charge
have no charge
can have either a positive or a negative charge
An atom is neutral because
the positive charge of the nucleus is equal to the sum of the negative charges of the electrons
the negative charge of the nucleus is equal to the sum of the positive charges of the electrons
it does not contain any charged particles
What is the atomic number of oxygen?
16
9
8
2
What is the element with the atomic number 12?
sodium
iron
bromine
magnesium
What is the number of electrons in an atom of neon?
10
7
23
100
What is the element with 1 electron?
helium
hydrogen
chlorine
gold
Which particle has a positive charge?
electron
neutron
proton
Which particle does not have a mass of 1 u?
neutron
electron
proton
What two particles are found in the nucleus?
proton and neutron
neutron and electron
proton and electron
An atom is neutral because it contains
a number of electrons equal to the sum of the numbers of protons and neutrons
a number of neutrons equal to the sum of the numbers of electrons and protons
a number of protons equal to the number of neutrons
a number of electrons equal to the number of protons
Which particle is neutral?
neutron
proton
electron
The periodic table is arranged by...
date discovered
colour
atomic number
abundance
if carbon has 12 protons, how many electrons does it have?
6
12
11
none
