Periodic Table
On the periodic table, periods are the
horizontal rows
The abbreviation or shortened element name
element symbol
which is found on the left side of the staircase on the periodic table?
metals
Isotopes are different versions of the ________ element
SAME
What charge do protons have?
positive
On the periodic table, groups are the
vertical columns
This part of an element square tells the number of protons in the atom
atomic number
which is found on the right side of the staircase on the periodic table?
nonmetals
True/False
Isotopes have the same number of protons
TRUE
What charge do electrons have?
negative
An element in group 18 would have how many valence electrons?
8
If a neutral atom has 10 protons, how many electrons does it have?
10
name 2 properties of metals
malleable, ductile, shiny, good conductor of electricity AND heat
True/False
Isotopes have the same atomic mass
FALSE
What sub particles are located in the nucleus?
protons and neutrons
An element in period 2 would have how many energy levels?
2
This part of an element square is found by adding the number of protons and the number of neutrons
atomic mass
name 2 properties of nonmetals
dull, brittle, poor conductors
Using isotope notation, what is the number in the top left corner?
*draw it on the board*
atomic mass
what particles are found moving around the nucleus on energy levels?
electrons
On the periodic table, elements in group 2 are classified as what type of metals?
Alkaline Earth
_______ minus ________ = # of neutrons
atomic mass - # of protons
name the metalloid that is used in electronics and technology
silicon
Using isotope notation, what is the number in the bottom left corner?
*draw it on the board
the number of protons
What is the mass in amu (atomic mass unit) of protons and neutrons?
1 amu