Energy
Bonding (ionic)
Bonding (cont'd)
Bonding/ Chemical Reactions
Moles
100
Label heating curve with phase
A. solid
B. solid & liquid, melting
C. Liquid
D. liquid & gas, vaporization
E. gas
100
Identify the element in the 4th period most likely to create an ion with a +2 charge.
Calcium
100
Name the following compounds
SF6
P2O5
Sulfur hexaflouride
Diphosphorus Pentoxide
100
balance:
KHF2⟶KF+H2+F2
2KHF2⟶2KF+H2+F2
100
Determine the molar mass of Mn(ClO2)4.
324.74 g/mol
200
One cup of lentil soup has 7.5 g protein, 6.0 g fat, 15.0 g carbohydrates. How many kilocalories are in the soup?
144kcals
200
Write the formula for Calcium Phosphide
Ca3P2
200
Identify the 7 diatomic and define what it means
Hydrogen
Nitrogen
Fluorine
Oxygen
Iodine
Chlorine
Bromine
These elements never exist on their own. They always come in pairs.
200
Balance and identify type of reaction:
C2H4+O2 →CO2+H2O
C2H4+3O2 →2CO2+2H2O
Combustion
200
If a cleaning agent contains 2.49 mol NH3, how many grams of NH3 are in the cleaning agent?
42.40 g NH3
300
A 13.5 g metal was heated to 100.0 degrees Celsius. It was then transferred to a water bath where it cooled to 25.5 degrees Celsius, and the water absorbed 120. cal of heat from the metal. What is the specific heat of the metal?
0.119 cal/g degree Celsius
300
What is the correct name for Cu2S?
Copper I Sulfide
300
Write the lewis dot structure for NCl3
300
Classify each of these reactions.
1. Ba(ClO3)2⟶BaCl2+3O2
2. CaO+CO2⟶CaCO2
3. NaNO2+HCl⟶NaCl+HNO2
1. decomposition
2. combination
3. double replacement
300
molar mass of C12H22FeO14
446.139 g/mol
400
How many calories of heat (energy) would it take to heat 13.0 g of water from 35.0 °C to 47.0 °C?
156 cal
q=mc(change in temp.)
400
What is the formula for Magnesium Nitrate?
Mg(NO3)2
400
Which type of bond exists in each compound?
1. KCl 2. BCl3 3. P4 4. Br2
A. ionic bonds
B.nonpolar covalent bonds
C. polar covalent bonds
1. ionic bond
2. polar covalent
3. nonpolar covalent
4. nonpolar covalent
400
Define hydrogen bonding and give an example of hydrogen bonding in a molecule.
a special, extremely strong dipole-dipole force
HF
400
what mass of hydrogen is produced from 2.33 mol of aluminum?
2Al+3H2SO4⟶3H2+Al2(SO4)3
7.05 g
500
How much energy is required to convert 42.0g ice to steam at 115 degrees Celsius from -25 degrees Celsius?
SH ice- 0.499 cal/g degree C
SH steam- 0.485 cal/ g degree C
31.1 kcal
500
Write the formula and name when Al3+ and CN- interact.
AlCN3
Aluminum Cyanide500
Determine the electron geometry and molecular geometry of BF3
Electron Geometry- trigonal planar
Molecular Geometry- trigonal planar
500
Identify the oxidized substance and the reduced substance in the redox reaction.
Cu(s)+2AgNO3(aq)⟶2Ag(s)+Cu(NO3)2(aq)
A. Ag
B. Ag+
C. Cu2+
D. Cu
E. NO−3
Cu: oxidized
Ag+: reduced
500
How many grams of P2O5 are formed when 6.43 g of phosphorus reacts with excess oxygen?
4P(s)+5O2(g)⟶2P2O5(s)
14.73 g