What is the charge of electrons? protons? neutrons?
negative, positive, no charge
How many atoms are in one molecule of H₂O?
3
Elements in the same column are part of the same
group/family
What is a cation?
an atom that GIVES electrons
What is a charged atom called?
ion
What is the chemical symbol for potassium?
K
How many elements are in MgCl₂ ?
2
True or false:
Elements in the same period have the same amount of valence electrons
False
Elements in the same group/family have the same amount of valence electrons
What is an anion?
an atom that GAINS electrons
To calculate neutrons, the equation is. . .
atomic mass - atomic number
How do we calculate the number of protons and electrons?
protons = atomic #
electrons = atomic #
H₂SO₄ contains how many atoms total?
7
How many valence electrons does oxygen have?
What type of bond has a donation of electrons?
Ionic
What is the family found in the staircase?
Metalloids/Semi-metals
How many electrons can the first shell hold?
second shell?
first shell - 2
second shell - 8
What is the difference between H2O and H2O2?
H2O2 contains an additional oxygen
What group are alkali earth metals found in?
2
Name two group #s that are likely to form an IONIC bond together.
1 - 17
2- 16
13- 15
What is the name for the elements located in group 17?
Halogens
Draw a B-R diagram for Carbon on the board
Indicate the amount of atoms of each element in the following compound:
Fe2(SO4)3
Fe - 2
S- 3
O - 12
What group are the least reactive elements found in?
18
Ionic bonds occur between a . .. . .
a metal and non-metal
Draw the ion diagram for BORON
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