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CU Atoms II
CU Atoms II
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Cedarville University Atoms part II
Flashcards
20 cards
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Practice quiz
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Host live
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Questions
20
Answers
1
How many neutrons does the isotope Lithium 7 have?
3
2
4
5
2
Which particles in an atom have a mass of 1 AMU (Atomic Mass Unit)?
Nucleus
Electrons
Neutrons
Protons
3
The discoverer of radioactivity was...?
Edward Jenner
Albert Einstein
Robert Oppenheimer
Marie Curie
4
An elements atomic number is indicated by the atom's number of....?
Electrons
Nucleus
Neutrons
Protons
5
The amount of time it takes for half of a radioactive isotope to decay is called...?
Half Time
Alpha Decay
Radioactivity
Half Life
6
Which number represents the mass of an atom and all its isotopes?
Atomic Number
Atomic Mass
Einstein
Valence Number
7
An atom that has an abnormal number of neutrons is called a(n)...
Radioactive
Alpha Particle
Beta particle
Isotope
8
What is the name of the force that keeps the positively charged protons together in da nucleus?
Atom Force
Electromagnetic Force
Nucleus Force
Strong Force
9
What is the name for the nuclear process in which two nuclei come together (happens on stars)?
Radioactivity
Nuclear Fission
Nuclear Fusion
Nuclear Decay
10
99.999999999999% of an atoms mass is found where?
Neutrons
Electrons
Nucleus
Protons
11
Which part(s) of John Dalton's atomic theory are false?
All matter is made of atoms
Different elements are made from different atoms
Atoms cannot be broken down into smaller pieces
All atoms of an element are identical
12
If Iodine 131 has a half life of 8 days how much of a 100g sample will be left after 16 days?
12.5g
25g
75g
50g
13
Which of the following is not a type of radioactive decay?
Beta Decay
Isotope Decay
Gamma Decay
Alpha Decay
14
Which statement(s) are false?
Protons are positive
Electrons are positive
Protons have no charge
Neutrons have no charge
15
What is the name for when one element changes into another by way of radioactive decay?
Transmustation
Isotope
Radioactivity
Atomic Mass
16
How many protons does the element Oxygen have?
15.999
8
6
7
17
Which model of the atom was proposed by JJ Thompson and contained electrons?
Tiny Nucleus Model
Plumb Pudding Model
Cathode Ray Tube
Brass Ball Bering
18
How many neutrons does the isotope carbon 14 have?
9
10
8
7
19
How many protons does the element Boron have?
6
10.811
4
5
20
Which type of radiation is most damaging to human cells?
Beta Radiation
Nuclear Fallout
Gamma Radiation
Alpha Radiation
