WorksheetsSubatomic Particles - Electrons, Protons, Neutrons
Total questions: 36
Worksheet time: 22mins
What is matter?
Anything that has mass and occupies space
Anything that transfers energy
Anything that moves through space
What is the main difference between John Dalton's and J.J. Thomson's models of an atom?
John Dalton thought that atoms are divisible and J. J. Thomson determined that atoms are indivisible
John Dalton thought that atoms are indivisible and J. J. Thomson determined that atoms are divisible after he discovered electrons
Both, Dalton and J.J. Thomson proposed that atoms are indivisible particles.
What does it mean - subatomic particles?
Particles that cannot be divided further
Particles that are smaller than an atom and make up an atom
Particles that are bigger than an atom and contain an atom in them
Particles that are the same size as an atom
Choose 3 main subatomic particles of an atom from the list below.
Nucleus
Electron
Element
Proton
Neutron
What is an electron?
It is a positively charged subatomic particle
It is a negatively charged subatomic particle
It is a neutral (no electrical charge) subatomic particle
What is a proton?
It is a positively charged subatomic particle
It is a negatively charged subatomic particle
It is a neutral (no electrical charge) subatomic particle
What is a neutron?
It is a positively charged subatomic particle
It is a negatively charged subatomic particle
It is a neutral (no electrical charge) subatomic particle
Who discovered the electron?
English chemist - John Dalton
English physicist - J.J. Thomson
English physicist from New Zealand - Ernest Rutherford
Greek philosopher - Democritus
What is the electrical charge of an electron?
+1 (positive)
0 (neutral)
-1 (negative)
What is the electrical charge of a proton?
+1 (positive)
0 (neutral)
-1 (negative)
What is the electrical charge of a neutron?
+1 (positive)
0 (neutral)
-1 (negative)
What kind of equipment was used to discover the electron?
A round-bottom glass flask for carrying out chemical reactions
A Cathode Ray Tube (CRT)
Electron Transmission Microscope (ETM)
A chamber producing alpha particles going through a gold foil surrounded by a screen (Gold Foil Experiment)
What kind of equipment was used to discover the proton?
A round-bottom glass flask for carrying out chemical reactions
A Cathode Ray Tube (CRT)
Electron Transmission Microscope (ETM)
A chamber producing alpha particles going through a gold foil surrounded by a screen (Gold Foil Experiment)
What kind of interaction does occur between particles that have opposite charges?
The particles repel from each other
The particles attract to each other
What kind of interaction does occur between particles that have same charges?
The particles repel from each other
The particles attract to each other
What is an anode?
Positively charged electrode made from metal.
Negatively charged electrode made from metal.
Neutral plate, made from metal
What is a cathode?
Positively charged electrode, made from metal.
Negatively charged electrode, made from metal.
Neutral plate, made from metal
What is a cathode ray?
A glowing beam of negatively charged particles that move in a straight line from the anode to the cathode.
A glowing beam of negatively charged particles that move in a straight line from the cathode to the anode.
A beam of electrons produced by the sun.
A cathode ray in a CRT travels from...
A negatively charged electrode - cathode
A positively charged electrode - anode
A positively charged electrode - cathode
A cathode ray in a CRT travels toward...
A negatively charged electrode - cathode
A positively charged electrode - anode
A positively charged electrode - cathode
Which electrical charge does the cathode ray have?
negative charge
positive charge
no charge
What happens to the cathode ray when it travels between electrically charged metal plates.
The cathode ray gets attracted toward a positively charged metal plate
The cathode ray gets attracted toward a negatively charged metal plate
The cathode ray does not change its trajectory and continues moving toward the anode
Why did J. J. Thomson and R.A. Millikan conclude that an electron is a fundamental subatomic particle of an atom?
They noticed that different substances in their experiments produced identical negatively charged particles with the same mass and the same charge.
They noticed that different substances in their experiments produced different negatively charged particles with different mass and different charge that depended on the substance.
They noticed that different substances in their experiments produced different negatively charged particles with different mass and the same charge.
What are the main characteristics of J. J. Thomson's model of an atom?
An atom has a spherical shape and cannot be divided further
An atom has different shapes and cannot be divided further
An atom contains negatively charged particles (electrons), which are evenly distributed inside of a positively charged space of an atom. Atom is divisible particle of matter.
An atom contains negatively charged particles (electrons), which move around a positively charged nucleus of an atom. Atom is divisible particle of matter.
What is the name of J. J. Thomson's model of an atom?
Indivisible Marble Model
Indivisible Cones and Cylinders Model
Plum-Pudding Model
Electron Cloud Model
Who is Robert A. Millikan?
The English physicist who discovered the electron
The U.S. physicist who determined the charge of the electron and calculated an electron's mass.
The English physicist who discovered the neutron
The German physicist who discovered the proton
The German physicist who developed his theory of relativity
Who is Eugen Goldstein?
The English physicist who discovered the electron
The U.S. physicist who determined the charge of the electron and calculated an electron's mass.
The English physicist who discovered the neutron
The German physicist who discovered the proton
Who is James Chadwick?
The English physicist who discovered the electron
The U.S. physicist who determined the charge of the electron and calculated an electron's mass.
The English physicist who discovered the neutron
The German physicist who discovered the proton
Who is J. J. Thomson?
The English physicist who discovered the electron
The U.S. physicist who determined the charge of the electron and calculated an electron's mass.
The English physicist who discovered the neutron
The German physicist who discovered the proton
The relative mass of a neutron is equal to
the mass of an electron
the mass of a proton
the mass of two protons combined together
The relative mass of the electron is
the same as a mass of the proton
the same as a mass of the neutron
almost 2000 times lighter than the mass of the proton or the neutron
The relative mass of the proton is equal to
1 atomic mass unit (amu)
2 atomic mass unit (amu)
0 atomic mass unit (amu)
What does "CRT" stand for?
Cathode Ray Tube
Community Renewal Team
Cathode Race Track
What are canal rays?
Rays composed of positively charged particles (protons) that produced in a CRT and traveling from the anode to the cathode
Rays composed of positively charged particles (protons) that produced in a CRT and traveling from the cathode to the anode
Rays composed of negatively charged particles (electrons) that produced in a CRT and traveling from the cathode to the anode
Choose the correct value of an Angstrom from the list below
1 °A = 0.1 m or 10-1 m
1 °A = 0.1 nm or 10-10 m
1 °A = 1 nm or 10-9 m
What is an Atom?
It is the smallest particle of an element that doesn't change into a particle of another element during a chemical change.
It is the smallest particle of an element that change into a particle of another element during a chemical change.
The smallest fundamental particle of the universe.
