Atomic Theory
Atomic Structure
Identify that Element
Electron Arrangement
Miscellaneous
100
Can the atom be divided?
What is Yes
100
What are the charges for protons, neutrons and electrons.
What is positive, no charge, negative.
100
This atom of an element has an atomic number of 1 and a mass number of 1.
What is Hydrogen.
100
This is the region where electrons travel.
What is electron cloud.
100
Atomic number represents
What is # of protons in the nucleus.
200
Who was the first to propose that atoms cannot be divided forever?
Who is Democritus.
200
This is the small, dense center of an atom.
What is Nucleus.
200
This atom of an element has an atomic number of 13 and 13 electrons.
What is Aluminum.
200
This represents the most likely location of an electron in an electron cloud.
What is Energy Level.
200
Unit used to measure masses of subatomic particles
What is Atomic Mass Unit.
300
Who discovered the electron?
Who is J.J. Thomson.
300
This is an atom of an element with the same number of protons but different number of neutrons.
What is Isotope.
300
This atom of an element has a mass number of 35 and atomic number of 17.
What is Chlorine.
300
A max of 2 electrons can be held on this level.
What is Energy Level 1.
300
The mass number represents
What is sum of protons and neutrons in the nucleus.
400
How did Rutherford know there must be a small, positively charged center of the atom?
What is He shot positively charged particles into the gold foil and a few bounced back.
400
True or False: Protons and neutrons are larger than electrons.
What is True.
400
Bohr Model - Identify the Element.
What is Phosphorus.
400
True or False: Electrons can be in between energy levels.
What is False.
400
These determine the chemical properties of an element
What is electrons.
500
Provide 1 of the 3 main ideas of Dalton's Theory?
What is 1. All elements are composed of atoms that cannot be created, divided or destroyed. 2. Atoms of the same element are alike and atoms of different elements are different. 3. Compounds are formed by joining two or more atoms of different elements.
500
Particles that make up protons and neutrons.
What is Quark.
500
Bohr Model - Identify the element.
What is Neon.
500
Explain electron arrangement of Nitrogen.
What is 2 electrons on the 1st energy level and 5 electrons on the 2nd energy level.
500
The nucleus is more dense than the rest of the atom because
What is Protons and neutrons are larger in terms of amu (atomic mass unit). Proton and neutron = 1amu Electron = 0.0006amu
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