5.1 Study Guide Flashcards
How can scientists track isotopes?
Isotopes have a different weight and some are even radioactive and the scientists can track them this way.
Describe a proton.
+1 charge, 1 amu, and is always in the nucleus.
Describe a neutron.
Zero charge, 1 amu, is always in the nucleus.
Describe a electron.
-1 charge, almost zero mass/weight, is outside the nucleus.
How does the attraction between valence electrons change going down a column of the periodic table?
The attraction weakens because the more electrons there are the more they repel each other.
How does attraction between a proton and an electron change with distance?
The closer they are, the stronger the attraction. The farther apart they are, the weaker the attraction.
What changes between isotopes of an atom?
The number of neutrons.
What stays the same between isotopes of an atom?
The number of protons.
What is the purpose of the proton in the atom?
It defines what type of atom the particular atom belongs to.
What does a neutron do?
It holds together the protons.
What does an electron do?
It makes reactions with other atoms.
How does attraction change between a proton and an electron with different amounts of charge.
More charge=more attraction, Less charge=less attraction.
