Atoms And Half Life Flashcards
Where are electrons found?
A: Electrons and neutrons are located in the nucleus (center) of an atom.
B: Electrons are located in the nucleus (center) of an atom.
C: Electrons are found in a cloud outside of the nucleus
C: Electrons are found in a cloud outside of the nucleus
Where are protons found?
A: Protons are located in the nucleus (center) an atom.
B: protons are located outside the nucleus in the cloud
A: Protons are located in the nucleus (center) an atom.
Where are neutrons found?
A: Neutrons are found in a cloud outside of the nucleus.
B: neutrons are located in the nucleus (center) of an atom.
B: neutrons are located in the nucleus (center) of an atom.
How do you find an element?
A: by looking at the mass number
B: by looking at the number of protons (the atomic number)
C: by looking at the number of neutrons
B: by looking at the number of protons (the atomic number)
How do you find the number of protons?
A: by looking at the atomic number
B: by looking at the atomic mass
A: by looking at the atomic number
The number of electrons is ____ to the number of protons
A; different
B; equal
B: equal
To find the mass number you must add the number of ____ and the number of ____
A: electrons and protons
B: protons and mass number
C: protons and neutrons
D: electrons and mass number
C: protons and neutrons
To find the number of neutrons you must subtract the _____ and _____
A: protons and electrons
B:mass number and protons
B: mass number and protons
What is the atomic number? (Select all that apply)
A: the number of neutrons
B: the way to identify an element
C: the number of protons
B and c
How do you find the atomic mass?
A: neutrons plus protons
B: neutron number
C: look on the periodic table
A: neutrons plus protons
An alpha particle has a charge of ___, has the ____ amount of penetration, and has a mass of _____
A: +2, least, 4amu
B: -1, medium, 1/2000 amu
C: 0, deepest, 0amu
A: +2, least, 4amu
A Beta particle has a charge of ___, has the ____ amount of penetration, and has a mass of _____
A: +2, least, 4amu
B: -1, medium, 1/2000 amu
C: 0, deepest, 0amu
B -1, medium, 1/2000amu
A gamma ray has a charge of ___, has the ____ amount of penetration, and has a mass of _____
A: +2, least, 4amu
B: -1, medium, 1/2000 amu
C: 0, deepest, 0amu
C: 0, deepest, 0amu
Between a gamma ray, an alpha particle, and a Beta particle, which is the fastest and which is the slowest?
Gamma is the fastest and alpha is the slowest because of their masses
Alpha decay is always _____
A: 4 over 2 Helium
B: 5 over 2 helium
C: 6 over 2 helium
D: 7 over 2 helium
A: 4 over two helium
