Periodic Table
____ are horizontal rows and ____ are vertical columns on the periodic table.
PERIODS are horizontal rows and GROUPS are vertical columns
Metals have ____ melting points and Non-Metals have ____ melting points
Metals have HIGH melting points and Non-Metals have LOW melting points
What are the three types of elements?
Metal, Non-metal, Metalloid
How does the number of electron shells vary on the periodic table?
Each period on the periodic table corresponds to an additional electron shell. Period 1 has 1 shell, while Period 7 has 7 shells.
What type of element is Fe (iron)
metal
Elements in a group/column in the periodic table can be expected to have similar _____.
Properties
These elements are shiny and able to conduct heat and electricity well. What elements am I talking about?
Metal
Fluorine and Chlorine have a lot of things in common. Explain what make them similar
They are both in Group 17 and have 7 valence electrons.
Using the trend of Metal Reactivity list in order from lowest to highest reactivity the three elements Be (beryllium), Al (aluminum), and Sn (tin)
Sn, Al and Be
what type of element is S (sulfur)
Non-metal
The ____ number shows energy levels and the ____ number shows us the number of valence electrons.
The PERIOD number shows energy levels and the GROUP number shows us the number of valence electrons.
These elements are usually dull in appearance, poor conductors of heat and electricity, and gasses at room temperature. What elements am I talking about?
Non-Metals
Name the 3 subatomic particles and their charges
Protons (+)
Neutrons (0)
Electrons (-)
Which group has 7 valence electrons
Halogens (group 17)
What type of element is Kr (Krypton)
Non-Metal
____ ____ is the number of protons in an atom.
ATOMIC NUMBER is the number of protons in an atom.
These elements have properties that fall between those of metals and non-metals. What element am I talking about?
Metalloids
What is a valence electron?
An electron in the outermost shell of an atom that can participate in forming chemical bonds.
Which element is NOT considered a metalloid
A. Silicon
B. Arsenic
C. Germanium
D. Potassium
D. Potassium
What type of element is Si (silicone)
Metalloid
Atomic number increases ____ and ____ on the periodic table.
Atomic number increases DOWN and RIGHT on the periodic table
Metal reactivity increases ____ and ____ on the periodic table.
Metal reactivity increases LEFT and DOWN on the periodic table.
The ability of atoms to combine or separate with other atoms to create new substances
Reactivity
Which group on the periodic table is considered happy or stable (Inert)
Noble Gases (group 18)
What element is As (arsenic)
metalloid