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WorksheetsAtoms and the Periodic Table
Total questions: 20
Worksheet time: 40mins
1How have Dalton’s ideas about atoms changed?
atoms are not indestructible but are made up of smaller particles
atoms are round particles
atoms are the smallest possible particles
What are the names of the three main subatomic particles?
protons, neutrons, electrons
protons, geutrons, electrons
rotons, neutrons, electrons
protons, neutrons, positrons
What is the nucleus of an atom made up of?
protons and neutrons
neutrons and electrons
protons and electrons
neutrons and positrons
How are electrons arranged in an atom?
orbiting the nucleus in regions called shells
in the nucleus
How do protons and electrons compare in terms of relative charge?
protons have a positive (+1) charge and electrons have a negative (−1) charge
electrons have a positive (+1) charge and protons have a negative (−1) charge
Why are most atoms neutral?
they have an equal number of protons and electrons
the have an equal number of protons and neutrons
they have an equal number of neutrons and electrons
What is the fundamental difference between atoms of different elements?
they contain a different number of protons
they contain a different number of neutrons
they contain a different number of electrons
How does the size of a nucleus compare to the size of the atom?
the nucleus is tiny compared to the size of the atom
the nucleus takes up most of the space in an atom
How many protons are there in an atom with an atomic number of 26?
26
52
13
How many neutrons are there in an atom with an atomic number of 26 and a mass number of 56?
30
26
13
What do modern atomic numbers tell you about an atom?
the number of protons in the nucleus
the number of neutrons in the nucleus
the number of electrons in the nucleus
Where are elements with similar properties placed in the periodic table?
in groups/columns
in periods/rows
Where do the atomic numbers increase by 1 each time in the periodic table?
in a period
in a group
Where are the electron shells found in an atom?
around the nucleus
in the nucleus
Why might a modern periodic table have gaps in it?
for undiscovered elements
it doesn't fit together properly
Name a group 0 element.
Argon
Oxygen
Aluminium
Lithium
Is an atom a zero-, one-, two- or three-dimensional object?
zero-dimensional
one-dimensional
two-dimensional
three-dimensional
The atomic number of chlorine is 17. How many electrons do its atoms have?
17
34
8.5
Who came up with the plum pudding model?
John Dalton
JJ Thomson
Ernest Rutherford
Niels Bohr
Who performed the gold foil experiment?
John Dalton
JJ Thomson
Ernest Rutherford
Niels Bohr
