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WorksheetsYear 9 Science | Inside the atom
Total questions: 20
Worksheet time: 10mins
How many electrons does iron have?
56
26
30
82
Name the pictured element.
Nitrogen
Nickel
Sodium
Neon
What is the number of protons that the element in this image contain?
18
14
15
7
What is the atomic mass of the pictured isotope?
17
18
35
36
What model of an atom is shown in the diagram?
nuclear
Dalton
gamma
plum pudding
Most of the mass in an atom is made up of _____________________?
protons and electrons
protons and neutrons
neutrons and electrons
electrons and quarks
What is fired at the gold foil in this experiment?
beta particles
alpha particles
gamma rays
protons
Different isotopes have different _____________.
Different masses
Different electrons
Different atomic numbers
Different protons
How many different types of atoms are elements made from?
1
2
3
4
How many neutrons does a Carbon 13 atom have?
5
6
7
8
The atomic number of an element tells you
how many protons and neutrons it has
the mass of the nucleus
how many isotopes it has
how many protons it has
Uranium-238 decays into Thorium-234 by emitting
a neutron
an alpha particle
a beta particle
a gamma particle
What is an atom mostly made up of?
empty space
electrons
protons
alpha particles
Up to how many electrons are on the shells after the first shell?
8
6
4
2
What part of the atom has no charge?
proton
atom
electron
neutron
In a correctly written symbol what would be located in the "Z" position?
number of neutrons
number of electrons
atomic mass
atomic number
How many neutrons does iron have?
56
30
26
82
What orbits the nucleus?
proton
nucleus
electron
neutron
What part of the atom has a mass of nearly 0?
proton
atom
electron
neutron
Name the scientist who carried out the "gold foil experiment".
Thompson
Bohr
Rutherford
Dalton
