Atomic Structure and the Periodic Table Flashcards
What is the difference between a compound and a mixture?
Compound: 2 or more elements chemically joined
Mixture: 2 or more elements or compounds not chemically bonded.
What process is used to purify seawater to obtain usable water?
Distillation
What was the earliest model of the atom?
Plum Pudding Modal
Name three subatomic particles and their charges.
Protons: +1
Electrons: -1
Neutrons: 0
What does the atomic number tell us about an atom?
The number of Protons/ Electrons
What does the mass number tell us about an atom?
The number of Protons and Neutrons combined
How is an isotope different from an atom?
It is the same as an element but has a different number of neutrons
Why is the overall charge of an atom zero?
Atoms have equal number of protons and electrons.
How are elements arranged in the periodic table?
Atomic Number
What are the columns of the periodic table called?
Groups
What are the rows of a periodic table called?
Periods
What does the column an element is in tell you about the atoms?
How many Electrons are on the outer shell
What does the row an element is in tell you about the atoms?
How many shells it has
Which side of the periodic table are the non-metals found?
The left
How were elements classified before the discovery of subatomic particles?
By atomic Mass
