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WorksheetsAtoms Lesson
Total questions: 25
Worksheet time: 25mins
What is matter made of?
nucleus
atoms
electrons
protons
Which part of an atom is found in the nucleus and contains a positive electric charge?
proton
neutron
nucleus
electrong
Which part of an atom is found in the nucleus and has no electric charge (it is neutral)?
electron
proton
neutron
nucleus
Which part of an atom is found moving outside of the nucleus and has a negative electric charge?
proton
neutron
nucleus
electron
How many protons, neutrons, and electrons does sulfur have? It's atomic number is 16 and it's atomic mass is 32.
16 protons, 16 neutrons, and 16 electrons
16 protons, 32 neutrons, and 16 electrons
16 protons, 16 neutrons, and 32 electrons
32 protons, 16 neutrons, and 16 electrons.
Silicon has a mass number of 28 and an atomic number of 14. How many protons does it have?
28
14
42
7
What is the mass number of the element nitrogen? It has 7 protons, 7 neutrons, and 7 electrons.
7
14
21
What is the name for the center of an atom where the protons and neutrons are found?
electrons
mass
nucleus
matter
How many electrons fill up the first ring/shell of an atom?
2
4
6
8
How many electrons fill up the second ring/shell of an atom?
2
4
6
8
Where do you find the protons and neutrons in an atom?
Outside around the nucleus
Inside the nucleus
Atoms are…
bombs.
made of elements.
fast moving particles with no kinetic energy.
smallest whole piece of an element that still retains properties of that element.
Valence electrons are...
the electrons in the outermost shell of an atom.
found at the bottom of the electron cloud.
are only affected by quarks and do not change the mass of an atom.
explosive parts of an atom.
Parts of an atom found in the electron cloud.
electrons
photons
protons
quarks
The protons and neutrons in an atom can be found in the...
nucleus.
electron cloud.
quarks.
gravitational field.
The majority of an atom is mostly…
empty space.
protons.
neutrons.
electrons.
Electrons are made of smaller, sub-atomic particles called…
positrons.
driptons.
leptons.
gluons.
Atoms are so small, they can only be seen with…
microscopes.
magnifying glasses.
STM machines.
thermostats.
How many electrons can the third shell/level of an atom can hold?
(a)
How many electrons can the second shell/level of an atom can hold?
(a)
What is the charge of a proton?
Positive
Negative
Neutral
Variable
Which part of the atom is responsible for its chemical properties?
Protons
Neutrons
Electrons
Nucleus
What is the atomic number of an element?
The number of protons in the nucleus
The number of neutrons in the nucleus
The number of electrons in the outer shell
The total number of protons and neutrons
Which experiment led to the discovery of the nucleus?
Thomson's Cathode Ray Experiment
Rutherford's Gold Foil Experiment
Millikan's Oil Drop Experiment
Bohr's Hydrogen Spectrum Experiment
What is the main difference between isotopes of the same element?
Number of protons
Number of electrons
Number of neutrons
Number of nuclei
