I love Chemistry!
This has been the best class of my High School career!
Even though I passed, can I please take this class again!
My Chemistry teacher is a Rock Star!
I am going to nail this Final!
100
Carbon shows a very strong tendency to form...
What is covalent bonds?
100
Predict the product of the reaction represented by the following equation: MgO + CO2 ->
What is MgCO3?
100
Acids taste...
What is sour?
100
Proteins are responsible for...
What is transporting oxygen in the blood, catalyzing chemical reactions, and muscle contraction?
100
A water solution whose pH is 10...
What is always basic?
200
According to the law of conservation of mass, the total mass of the reacting substances is...
What is always equal to the total mass of the products?
200
If force is held constant as surface area decreases, pressure...
What is increases?
200
The particles in a liquid are usually...
What is closer together and lower in energy than those in a gas?
200
The molecular formula for vitamin C is C6H8O6. What is the empirical formula?
What is C3H4O3?
200
A substance that ionizes nearly completely in aqueous solutions and produces H3O+ is a...
What is strong acid?
300
Name the compound CF4.
What is carbon tetraflouride?
300
What is the formula mass of ethyl alcohol, C2H5OH?
What is 46.08 amu?
300
What is the ratio of the actual yield to the theoretical yield, multiplied by 100%?
What is percentage yield?
300
In most chemical reactions the amount of product obtained is...
What is less than the theoretical yield?
300
The substance whose Lewis structure shows three covalent bonds is... H2O ----- NH3------CH2Cl2----- CCl4
What is NH3?
400
When the equation Fe3O4 + Al --> Al2O3 + Fe is correctly balanced, what is the coefficient of Fe?
What is 9?
400
How is the measurement 0.000 065 cm written in scientific notation?
What is 6.5 × 10 –5 cm?
400
In the equation 2Al(s) + 3Fe(NO3)2(aq) --> 3Fe(s) + 2Al(NO3)3(aq), iron has been replaced by...
What is aluminum?
400
Which of these statements about units of measurement is not true? a. A unit compares what's measured with a defined quantity. b. A unit is usually preceded by a number. c. Measurements are compared without knowing their units. d. The choice of unit depends on the quantity being measured.
What is c. "Measurements are compared without knowing their units?"
400
A compound contains 64 g of O and 8 g of H. What is the empirical formula for this compound?
What is H2O?
500
For the reaction represented by the equation 2Na + 2H2O > 2NaOH + H2, how many grams of hydrogen are produced if 120. g of sodium and 80. g of water are available?
What is 4.5 g?
500
At 7.0°C, the volume of a gas is 49 mL. At the same pressure, its volume is 74 mL at what temperature?
What is 150 degrees Celsius?
500
For the reaction represented by the equation 2H2 + O2® 2H2O, how many moles of water can be produced from 6.0 mol of oxygen?
What is 12 mol?
500
The molar mass of NO2 is 46.01 g/mol. How many moles of NO2 are present in 114.95 g?
What is 2.498 mol?
500
How many moles of HCl are present in 0.70 L of a 0.33 M HCl solution? (molar mass of HCl = 36.46 g/mol)
What is .23 mol?
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