Odds and Ends
Arrangement
Periods
Categories of the Periodic Table
Charges
100
Who created the origional Periodic Table?
Mendeleev
100
By what are the elements in the Periodic Table arranged?
by their properties
100
How many periods are there in the Periodic Table?
7
100
What are the three categories of elements?
Metals, Metalloids, Nonmetals
100
The electron has this kind of charge.
Negative
200
How did Medeleev arrange the elements in the Periodic Table?
by atomic mass
200
How many Family Groups are there in the Periodic Table?
18
200
Are elements in a period alike or not alike in their properties?
Not Alike
200
List the four most important Physical properties of metal.
Metallic lustre Malleable and ductile Conduct heat and electricity Have high melting and boiling points Are sonorous
200
The neutron has this kind of charge.
Neutral or no charge
300
Who created the Periodic Table that we use today in science?
Henry Mosley
300
What do elements in the same Family Groups have in common?
Similar characteristics or properties
300
Compare the first element and then the last element in a period.
The first is usually a solid - metal. The second is always a gas.
300
List the four most important properties of Nonmetals.
No metallic luster and do not reflect light Brittle Not able to conduct electricity or heat very well Usually exists as gases
300
The protons have this kind of a charge.
Positive
400
What is the difference between Mendeleev's and Mosley's tables?
Mosley's table is ordered by Atomic Number
400
When the elements are arranged in rows, they are arranged by their ...what?
energy levels
400
Explain what happens to the atomic mass of the elements in a Period.
The atomic mass increases
400
What are the chemical properties of Metals?
Tend to lose electrons during chemical changes. Always have 4 or fewer valance electrons Deteriorate / corrosion
400
What three tiny particles make up an atom?
Protons Neurtons Electrons
500
From what country did Mendeleev live?
Russia
500
Elements in the same Family Group have the same number of ...what?
Valence Electrons
500
As you look at the Periodic Table, what type of elements make up most of the table?
Metal
500
What are the chemicl properties of Nonmetals?
They gain electrons during chemical reactions. They always have 5 or more valence electrons.
500
Using your knowledge of positive and negative charges, explain how this attraction hold and atom together.
Opposite charges attract to each other. The positive charge of the proton attracts and hold the negative charge of the electrons.
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