Element Classifications
Where are metals located on the Periodic Table?
Left of the zig zag.
How many valence electrons does every element want to have and how do covalent bonds achieve that magic number?
8 and sharing.
What's the difference between a cation and an anion?
Cation is positively charged and anion is negatively charged.
Do molecules make up atoms or vice versa?
Vice versa (atoms make up molecules).
Which side of the arrow are the products on in a chemical equation?
Right side.
If I say Magnesium is in Group 2, am I referring to the rows or the columns of the Periodic Table?
Columns.
What kind of bond (single, double, or triple) is in O2?
Double.
Metals.
What do coefficients represent?
The number of molecules there are.
What is the Law of Conservation of Mass and how does it relate to balancing chemical equations?
Matter cannot be created or destroyed and with chemical equations, you have to end up with what you started with.
How many valence electrons does Sulfur (S) have?
6.
Draw the covalent structure for CO2.
O=C=O
Draw the ionic structure for LiF.
Li+1[F]-1
How many atoms of each element in 3CO2?
C=3 and O=6.
Is this chemical equation balanced or not: 2Na + 2Cl2 → 2NaCl
Not balanced.
No luster, brittle, and low melting point describe which type of element (metal, nonmetal, metalloid)?
Nonmetal.
What's the chemical formula for carbon tetrachloride?
CCl4.
Draw the ionic structure of Al2S3.
2[Al]+33[S]-2
What is the structure of Cu(NO3)2?
You do not have to draw out every atom, but what do the parentheses mean?
NO3-Cu-NO3
Balance the chemical equation: ____ Ag2O 🡪 ____ Ag + O2
2Ag2O 🡪 4Ag + O2
How would you summarize the properties of metalloids?
Properties in between a metal and a nonmetal.
What is the name of N2O5?
Dinitrogen pentoxide.
What is the name of FeO?
Iron oxide.
How many atoms of each element in 2Cu(NO3)2?
Cu=2, N=4, and O=12.
Balance the chemical equation: 2AlBr3 + 3K2SO4 🡪 ____ KBr + Al2(SO4)3
2AlBr3 + 3K2SO4 🡪 6KBr + Al2(SO4)3