What is the periodic trend for increasing atomic radius?
Atomic radius increases to the left and down the table.
100
Define intermolecular force.
The force between two molecules that can cause attraction or repulsion.
100
Convert 56 cal to kJ
0.23 kJ
100
Name the following compound. FeI2
Iron (II) Iodide
200
Convert 30.4 lbs to kg.
13.8 kg
200
What does an atom's atomic number represent?
The number of protons.
200
Name and rank the three important intermolecular forces from weakest to strongest
London Dispersion Forces < Dipole-Dipole Interactions < Hydrogen Bonding
200
How many calories would your body be able to produce from a sandwich containing 9g of fat and 20g of carbs?
161 cal
200
Write the formula for Copper(I) Sulphate
Cu2SO4
300
Convert 0.45 miles to inches.
29,000 inches
300
What is the difference between ionization energy and electronegativity?
Ionization energy is the amount of energy needed to remove an electron. Electronegativity is an atoms propensity to attract electrons.
300
Explain why carbon dioxide is a gas at room temperature but water is a liquid.
CO2 is considered non-polar with the polar bonds contained are dipole-dipole. H2O on the other hand has two sets of hydrogen bonds to increase the intermolecular interactions.
300
Which food contains more Calories: 3 oz salmon, which contains 17g of protein and 5 g of fat, or 3 oz of chicken, which contains 20 g of protein and 3 g of fat? (Show your work)
Salmon @ 113 Cal vs Chicken @ 107 Cal
300
Draw the lewis dot structure for HNO2
Will be drawn
400
Convert 0.5 qts to cL.
50 cL
400
Order the atoms in increasing electronegativity. K, N & Si.
N>Si>K
400
Between Ethylene and Methanol, what are the intermolecular forces that are present in each?
Ethylene = london dispersion
Methanol = london dispersion + dipole-dipole + hydrogen bonds
400
Calculate the amount of heat needed to increase the temperature of 250 g of water from 20C to 46C.
38kJ or 37,620J
400
What is the molecular shape of each important atom of HCCH2COOH
Will be walked through.
500
A patient needs 4.2 g of medicine. The pills only come in 510 mg capsules, haw many pills should be given to the patient?
8 pills
500
If a neutral element has a mass number of 68 and 34 electrons, what is the element?
Selenium, Se
500
Why is the melting point of NaCl (801C) much higher than the melting point of water (0C)?
NaCl forms an ionic bond which is the complete stealing of electrons. So full charges are much better than the hydrogen bonding in water.
500
216 J of energy is required to raise the temperature of aluminum from 15C to 35C. Calculate the mass of aluminum.
(Specific Heat Capacity of aluminum is 0.90 J/(C*g).)
12 g
500
Burning gasoline releases 11.5 kcal of energy per gram. How many joules of energy are released when 1.0 gal of gasoline is burned? Put it down in scientific notation and the density of gasoline is 0.74g/mL.