1
Give three properties for the element phosphorus (P).
Three properties that phosphorus has is that it is not a good conductor of electricity or heat or tightly bound valence electrons, and gain negative electrons.
Name the only metal that is a liquid at room temperature.
Mercury
How many electrons does group 18 ( the noble gases) want to gain?
zero
What is the charge on a cation?
Cations are going to be positive.
How did Henry Moseley arrange his periodic table?
By atomic number
Give three properties for the element calcium (Ca).
Three properties of calcium are that it has a luster, gains positive electrons, and is a good conductor of heat and electricity.
Name the group of elements found on the left of the periodic table.
Metals
Which element in group 18 is chemically stable by having only two valence electrons?
Hydrogen
Who is considered the “father” of the periodic table?
Medeleev
Explain why metals are good conductors of electricity and heat.
They are good conductors of heat and electricity because they have tightly bound electrons.
Which group of the main group elements are chemically unreactive(satisfies the octet rule)?
Group 18
Name the group of elements located in the "zig zag" on the periodic table.
Metalloids
Explain the octet rule.
All the elements on the periodic table want to be like the noble gases in group 18.
How did Mandeleev arrange the periodic table?
By atomic mass
Why do elements of the main group elements lose, gain, or share electrons?
Because they want to be like the noble gases
Which groups on the periodic table will become ions when they gain electrons?
Groups 13, 16, 17
Name the group of elements located to the right of the "zigzag" on the periodic table.
Nonmetals
How many valence electrons does the element potassium (K) want to lose to become chemically stable?
One
What is luster?
How shiny a metal is.
Name of the metalloid that is most commonly used as a semiconductor.
Silicon
What does malleable mean?
The ability to be hammered or pressed permanently out of shape without breaking or cracking.
Why are valence electrons important?
It’s important because of how atoms chemically react.
Which group of elements on the periodic table will form cation?
The group elements are most metals from cations.
What is a valence electron?
A valence electron occupies the outermost shell of an atom.
Define semiconductor.
A semiconductor is materials which have a conductivity between conductors (generally metals) and nonconductors or insulators (such as most ceramics).