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WorksheetsQuiz Unit 3 LO#1-2
Total questions: 15
Worksheet time: 1hrs 15mins
Which sub-atomic particle identifies the element?
Proton
Neutron
Electron
Photon
Which particles are inside the nucleus?
Electrons
Photons
Neutrons
Protons
Match the following subatomic particles to their charge.
Proton
Positive Charge
Neutron
No Charge
Electron
Negative Charge
Use the image to identify a neutron of the atom.
Use the image to identify the element.
Oxygen
Nitrogen
Beryllium
Lithium
Use the image to calculate the mass number of this atom.
7 amu
4 amu
3 amu
7 grams
Based on the electrons in this atomic model: this atom has a charge of (a) (b) ?
Which of the following best describes what the "2+" means in Be2+.
Beryllium has 2 more protons than electrons.
Beryllium has 2 more electrons than protons.
Beryllium has an equal number of electrons and protons.
Beryllium has 2 more neutrons than protons.
Which scientist discovered the electron?
John Dalton
JJ Thomson
Ernest Rutherford
Neils Bohr
Bohr discovered that electrons are located in
the nucleus
inside protons
electron cloud
circular orbits around the nucleus
Which of the following is/are conclusions based on Rutherford’s gold foil experiment?
Atom is mostly empty space
The nucleus is positively charged
The atom has a small dense nucleus
All answers are correct
99.9% of the atom's mass is found where?
nucleus
protons
electron cloud
neutrons
A certain atom has 26 protons, 26 electrons, and 30 neutrons. What is its mass number?
26
30
52
56
Determine the number of:
Protons
Neutrons
Electrons
26 p+
30 no
26 e-
56 p+
26 no
26 e-
26 p+
26 no
26 e-
30 p+
30 no
26 e-
