Density
What is the formula for Density?
D (density) = M (mass) / V (volume)
In a neutral atom, the # Protons = # Electrons = ?
Atomic Number
Which type of bonding involves one non-metal and one metal?
Ionic bonding
CH4 + O2 --> CO2 + H2O
Combustion
Na + Cl2 --> NaCl
2Na + Cl2 --> 2NaCl
What is the formula to calculate volume?
V (volume) = m (mass) / d (density)
What is the other name for a charged atom?
Ion
What type of bonding includes two non-metals?
Covalent bonding
Hg2O2 --> Hg + O2
Decomposition
H2O + CO2 --> H2CO3
H2O + CO2 --> H2CO3
No change...its already balanced!
What is the density of an object that has a mass of 10g and a volume of 5mL? (Answer must have units.)
2 g/mL
How do you determine the number of neutrons?
What is the formula for calcium chloride?
CaCl2
Na + Cl2 --> NaCl
Synthesis
Al2(SO4)3 + Ba3(PO4)2 --> AlPO4 + BaSO4
Al2(SO4)3 + Ba3(PO4)2 --> 2AlPO4 + 3BaSO4
An object has a density of 2 g/mL. If it was dropped in water, what would happen to the object? Why? (Hint: The density of water is 1 g/mL.)
The object would SINK because it is MORE DENSE than the water.
How do you determine the number of electrons in an atom?
Protons - Charge
What is the correct name for CuCl2?
Copper (II) Chloride
Al2(SO4)3 + Ba3(PO4)2 --> AlPO4 + BaSO4
Double replacement
H2S + Cl2 --> S8 + HCl
8H2S + 8Cl2 --> S8 + 16HCl
An object has a density of 5 g/mL. If dropped into 20mL of water, the final volume is 22mL.
What is the mass of the object, and will the object sink or float in water? Explain. (Hint: The density of water is 1 g/mL.)
V (volume) = Final Volume - Starting Volume
V = 22mL - 20mL = 2mL
M (mass) = D (density) x V (volume)
M = 5 g/mL x 2 mL = 10g
The object will SINK because its density is greater than the density of water.
Calculate the electrons in S-2
18 electrons (16 - -2)
Name the following compound: (NH4)2O
Ammonium oxide
KCl + F2 --> KF + Cl2
Single Replacement
V2O5 + HCl --> VOCl3 + H2O
V2O5 + 6HCl --> 2VOCl3 + 3H2O