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WorksheetsThe Atom
Total questions: 24
Worksheet time: 12mins
Who's model of the atom was the first to include electrons
Dalton's
Rutherford's
Thomson's
Bohr's
Which scientist discovered the nucleus
Dalton
Thomson
Bohr
Rutherford
The (a) foil experiment was used to discover the nucleus.
Bohr used quantum mechanics to discover which part of his model
The elctron
The nucleus
That electrons orbit in set energy levels
That the nucleus contains protons and neutrons
The unit used to measure the mass of an atom is
the atomic mass unit
the atomic unit
the mass unit
the tiny mass unit
The letter used to represent the atomic mass unit is (a)
The proton
orbits the nucleus
is found in the nucleus
has zero charge
has a negative charge
has a positive charge
The electron
Is the largets subatomic particle
has a negative charge
has a positive charge
is the smallest subatomic particle
orbits the nucleus
The atomic number tells us the number of (a) in an atom
The number of neutrons in a nucleus is
atomic number
the atomic number - the mass number
the mass number
the mass number - the atomic number
Isotopes of the same element must have the same number of
protons
neutrons
electrons
The (a) atomic mass of an element is the average mass of one atom of all the naturally occurring isotopes of that element.
The first energy level of an atom can hold (a) electrons
The second and third energy levels of an atom can both hold (a) electrons
The noble gases (group 8)
need 1 electron to fill their out energy level
need to get rid of 1 electron to fil their outer energy level
have a full outer energy level
need 2 electrons to fill their outer energy level
The alkali metals (group 1) have (a) valence electrons
Which 2 letters are used to represent the subshells
s
a
v
p
b
Each energy subshell can hold (a) electrons
All electrons that are not the valence electrons are called
central electrons
middle electrons
core electrons
Ionisation energy is the energy required to
remove a proton from an atom
add a proton to an atom
remove an electron from an atom
add an electron to an atom
As you move across a period from left to right the ionisation energy
increases
decreases
stays the same
shows no pattern
The vertical columns in the periodic table are called (a)
Elements in the same group have the same number of ............. electrons
core
total
valence
Elements in the same (a) have similar chemical properties
