Counting atoms
The name of the number that tells us the number of molecules of a formula.
Coefficient.
The general formula for this type of reaction is
Ax + B --> Bx + A
Single Displacement.
The type of chemical reaction that requires a carbon compound in the reactants is a __________________.
Combustion reaction.
4 Valence Electrons, one on each side.
H2O
The name of the number that tells us the number of atoms of a particular element in a formula.
Subscript.
Balance the chemical equation.
FeCl3 + MgO ---> Fe2O3 + MgCl2
2FeCl3 + 3MgO ---> Fe2O3 + 3MgCl2
6.02 x 1023, Avogadro's Number.
The Lewis dot diagram tells us the number of ____________ for that element.
Valence Electrons.
What is needed for a correct, stable chemical formula.
Oxidation numbers must add up to zero.
The number of Oxygen atoms in this formula: 2Al2(CO3)3
18 Oxygen Atoms. (3*3) * 2 = 18.
What type of reaction is Pb(NO3)2+2KI→2KNO3+PbI2
Double Displacement Reaction
Valence Electrons.
Covalent bonds ____________ electrons while ionic bonds ____________ electrons.
Share, Transfer.
Finding the charge on the atom after it reaches a full valence shell.
How many atoms are in the formula 2Al2Si2O5(OH)4
34 atoms.
When saying a chemical equation the arrow is said as this word. E.g. H2 reacts with O2 and _________ H2O, or water.
Yields.
The type of bond between two nonmetals.
Covalent bond.
On board.
What is the correct chemical formula for Aluminum and HPO42-.
Al2(HPO4)3.
How many atoms are in the formula: CH3COO(CH2)2CH(CH3)2
23 atoms.
Li + H3PO4 ---> H2 + Li3PO4 Balance the chemical equation.
6Li + 2H3PO4 ---> 3H2 + 2Li3PO4
The name of the law that tells us we cannot create or destroy matter/mass in a chemical reaction.
Law of Conservation of Mass.
Draw the Lewis structure for AlCl3
On board.
When writing a chemical formula, which atom comes first? (Positively charged or negatively charged.)
The positively charged "cation" comes before the negatively charged "anion".