Stoichiometry
Reaction Rates, Equilibrium, Acids/Bases
Atmosphere and Nuclear Chemistry
Surprise me!
Short answer!
100
How close to the true value a measurement is. This is the definition of _____.
What is accuracy
100
Temperature, stirring, surface area, and reactant concentration all affect ____?
What is reaction rate?
100
Another name for the reflectivity of a surface
What is albedo
100
A pH of 6.5 describes a(n) ____.
What is an acid?
100
A good buffer will maintain...
What is a stable pH?
200
The prefix "deka-" indicates what number.
What is the number 10?
200
What are buffers composed of?
What is a weak acid and weak base?
200
Break large nuclei into smaller ones.
What is fission?
200
What ion is present in a base?
What is OH-?
200
If the forward reaction (to the right) is exothermic and the reverse reaction (to the left) is endothermic, is heat a reactant or product?
What is a product?
300
The Tyndall effect, where you can see a beam of light through a liquid due to particle size in water, can be seen in what 2 liquid/solid mixtures?
What are colloids and suspensions?
300
For this reversible reaction: A + B ⇆ C + energy. Which direction would equilibrium shift if B was removed?
What is shifting to the left?
300
Ripening fruit releases ethylene gas, which causes fruit ripening is an example of...
What is a positive/reinforcing feedback loop?
300
In solution A, the ions are dissociated completely. In solution B, there are undissociated molecules and dissociated ions. Which is a weak acid?
What is solution B?
300
How many moles is 110g of carbon dioxide?
What is 2.5 mol?
400
Calculate the molar mass of glucose (C6H12O6)
What is 180.16 g/mol?
400
Which graph represents an exothermic reaction?
What is graph B
400
If a radioactive isotope has a half life of 2 weeks, how much will be remaining after 6 weeks.
What is 1/8?
400
What's missing?
146C → 147N + ___
What is an electron (0-1e) or beta particle?
400
Describe LeChatelier’s Principle in your own words.
If equilibrium is disturbed, the point of equilibrium will shift to counteract change in conditions.
500
Convert the following:
2 mol H2O = ____ g H2O = ____ molecules of H2O = ____ atoms of hydrogen
What is 36.04 g, 1.204 x 1024 molecules, 2.408 x 1024 atoms?
500
As the pH of ocean water decreases (becomes more acidic), what happens to solubility of CaCO3? What does this mean for shells and corals?
Increased solubility of CaCO3 and shells and corals can dissolve.
500
23892U → 42He + 23490Th
This shows ____ radioactivity.
What is alpha?
500
Xe + 3F2 → XeF6
If 38g of F2 reacts with excess Xe, what mass of XeF6 will be produced? (Hint: this is a 3 step problem g F2 → mol F2 → mol XeF6 → g XeF6)
What is 81.76 g XeF6
500
Connect E=mc2 to radioactivity:
Shows how destroying a small amount of mass creates a huge amount of energy, combines laws of conservation of mass and energy