1x
What is the photoelectric effect?
Where a light “photon” transfers its energy to an electron, which is then emitted from a metal surface
The reaction in which oxidation and reduction takes place at the same time is called
redox reaction
Aside from its white color and high reflection, what characteristic of Rhodium makes it useful in jewelry?
Rhodium resists body oils that can dull non-gold jewelry
What type of energy is produced during the nuclear fission process as all the products fly apart?
kinetic energy
Generally, if there are too many neutrons, which pathway for a radioactive atom to regain stability is used?
Beta minus decay with electron emission occurs
What toxic metal is recovered from photographic chemicals?
Silver
What is the simplest method to express the proportions of a solute in a solvent?
mass in gram units
What was a large portion of French scientist Jacques Charles motivation?
he was motivated by his interests in hot air balloons
Who invented the earliest reliable battery?
J.F. Daniell
What is used in uranium fission and fusion reactions?
Dueterium (2H) and tritium (3H)
What is the definition of cell potential?
Electromotive force (emf) or cell voltage; is the electrical potential difference between the two electrodes in an electrolytic cell. It represents the potential energy that could do some work.
What did Antoine Lavoisier name the gas he came to recognize as necessary for combustion?
Oxygen or oxygène in "French"
What was violent about the landing of Charles’s hydrogen-powered hot air balloon
Startled peasants at the landing site attacked the strange balloon with their pitchforks
How many types of attractive forces are associated with atoms and molecules?
Five
Aside from products with the masses of 130 amu and 100 amu, what other product is usually released in the uranium fission process?
Two or three neutrons
Under conditions of standard temperature and pressure, substances with strong intermolecular forces typically exist as
Solids
What is the instrument used by chemists to determine relative masses of single atoms known as?
Mass spectrometer
Which gas law demonstrates the relationship between temperature, pressure, volume, and the number of molecules?
Avogadro
_____________ uses redox reactions to perform many common types of useful reactions, including those used in batteries and electroplating.
Electrochemistry
What is one way to describe the structure of gas in comparison to a solid
One way to describe a gas in comparison to a solid is that a solid has a high degree of order at short distances (called short-range order) whereas a gas has no ordered structure at all
What can Ksp values be used to predict?
Ksp values can be used to predict exactly how much precipitate will form in a precipitation reaction
Why are impurities added to metals or are mixed with other metals to form alloys?
This disrupts the smooth layers, decreasing the sliding of layers, and thereby increasing the strength of the metal for structural purposes
What are the advantages of using reverse osmosis instead of distillation?
Advantages of reverse osmosis over distillation include the fact that reverse osmosis has lower energy needs, has a lower discharge water temperature (which is less damaging to the ecosystem), it has purer water output, and does not require as large a plant as distillation does
What were the four elements in the Aristotelian view of the seventeenth century?
Earth, Air, Fire, Water
When is Tommy's birthday
December 19th, 2004