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IPC: Mass Number & Isotopes
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What is the mass number of this isotope?
23
What is the mass number of this isotope?
18
How do you know that these isotopes are of the same element?
they have the same number of protons
How many neutrons does this isotope of chlorine have?
18
How many protons does this isotope of chlorine have?
17
What is the mass of this isotope of chlorine?
35
How many neutrons does this isotope of beryllium have?
5
How many protons does this isotope of beryllium have?
4
What is the mass of this isotope of beryllium?
9
What is the top number for this isotope of magnesium?
15
How many NEUTRONS are in this isotope of lithium?
5
What is the bottom number for this isotope of lithium?
3
Page 32: Two isotopes of the same element have different ___________.
 
masses
 
volumes
 
atomic numbers
 
rings
Page 32: Two isotopes of the same element have equal numbers of __________ but a different number of _________.
protons, neutrons
Page 32: What does the "1" represent here?
the mass
Page 32: What does the BOTTOM number in isotope notation represent?
the atomic number (protons)
Page 32: What does the TOP number in isotope notation represent?
the mass number (protons + neutrons)
How many protons does an atom have if it has 63 neutrons and a mass number of 99?
36
How many protons does an atom have if it has 24 neutrons and a mass number of 39?
15
How many neutrons does an atom have if it has 86 protons and a mass number of 201?
115
How many neutrons does an atom have if it has 41 protons and a mass number of 90?
49
Which particle(s) have a mass of 1 AMU?
protons & neutrons
Which particle(s) have a mass of 0 AMU?
electrons
Which particles are found in the nucleus?
neutrons & protons
What is the mass of an electron?
0 amu
What is the mass of a neutron?
1 amu
What is the mass of a proton?
1 amu
What is the mass of an atom that has 57 protons and 64 neutrons?
121
The mass is made up of which 2 particles?
protons and neutrons
Where is all of the mass of an atom located?
nucleus
Which two particles have equal masses?
proton & neutron
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