Unit 5.1 Flashcards
What is the charge of a proton?
+1
What is the charge of a neutron?
0
What is the charge of an electron?
-1
What is the mass of a proton?
Heavy
What is the mass of a neutron?
Heavy
What is the mass of a electron?
Almost zero
Where are the protons located?
In the nucleus
Where are the neutrons located?
In the nucleus
Where are the electrons located?
Outside of the nucleus
What is the role of the proton?
Determines the identity of the atom
What is the role of the neutron?
Holds the protons together in the nucleus.
What is the role of the electron?
Responsible for reactivity.
What is the definition of isotope?
Different atoms of the same element.
Which charges attract each other and which ones repel?
Repel = Positive Positive, Negative Negative
Attract = Negative Postive
What is the relationship between coulombic attraction and amount of charge?
Direct. If the attraction increases then so will the charge by the same amount.
What is the relationship between coulombic attraction and distance?
It is the inverse related to the distance squared. This means you take the inverse of the number then square it.
What is the definition of electronegativity?
The tendency of an atom to attract to the electrons in a molecule.
An atom with 16 protons, 16 neutrons, and 18 electrons would be an atom of what element?
Sulfur
An atom with 16 protons, 16 neutrons, and 18 electrons would have an atomic mass of what?
32
An atom with 16 protons, 16 neutrons, and 18 electrons would have a net ionic charge of what?
-2
An atom with 11 protons, 12 neutrons, and 10 electrons would be what element?
Sodium
An atom with 11 protons, 12 neutrons, and 10 electrons would have an atomic mass of what?
23
An atom with 11 protons, 12 neutrons, and 10 electrons would have a net ionic charge of what?
+1
An atom of Calcium has an atomic mass of 41 and a net charge of +2 has how many protons?
20
An atom of Calcium has an atomic mass of 41 and a net charge of +2 has how many neutrons?
21
An atom of Calcium has an atomic mass of 41 and a net charge of +2 has how many electrons?
18
Why can isotopes be useful for scientific research?
They can track radioactivity
Will the attraction for valence electrons be higher for lithium or oxygen? Why?
Oxygen because there are more protons in the nucleus
Will the attraction for valence electrons be higher for lithium or potassium? Why?
Lithium, the valence electrons are in a lower energy level and closer to the nucleus.
Which molecule has a higher electromaginificy: A molecule with 5 protons and 1 electron or a molecule with 2 protons and 1 electron?
The first molecule
