What is petroleum (crude oil), natural gas (methane) or coal?
100
loss of electrons
What is oxidation?
100
The manner by which the original organization of the periods by Mendeleev was done.
What is by atomic weight.
100
List 3 unreactive metals
What is gold, silver, platinum or copper?
200
Ions present in aqueous sodium bromide solution
What is Na+, Br-, H+ and OH-?
200
Name 2 advantages of a fuel cell
What is non-polluting, lightweight, produce more energy per gram than hydrocarbons, do not need recharging, and highly efficient.
200
In lenses for eyeglasses that darken in the sun, a reaction occurs with the silver chloride in the lenses. This is an example of ......
What is a photochemical reaction?
200
Trend of melting and boiling points in group 2 (alkaline earth metals)
What is decrease as you go down the group.
200
reason why alkali metals are so reactive
What is they have 1 valence electron.
300
To extract aluminum, aluminum oxide is dissolved in a substance so that the melting point could be reduced to a point where electrolysis can occur efficiently and using far less power. Name the solvent.
What is cryolite?
300
The negative electrode in a electrochemical cell is ALWAYS...
What is the more reactive of the metals to be used in the cell as electrodes?
300
Increasing the pressure on a gas, increases.............so that the reaction proceeds faster.
What is concentration?
300
Diatomic GASES are.....
What is hydrogen, oxygen, nitrogen, fluorine, and chlorine
300
2 metals that react with cold water on reactivity series.
What is K, Na, Ca, Mg, Fe or Zn?
400
Reasons for electroplating any item
What is improve the appearance of metals and protect metals from corrosion?
400
radioactive isotope used in nuclear reactors to produce electricity
What is U-235?
400
Equipment used to collect gases in order to determine the rate of a reaction.
What is a gas syringe?
400
Nobel gases used in lasers
What is Krypton and Xenon?
400
When a more reactive metal (or halogen) replaces a less reactive metal (or halogen) in a chemical reaction.
What is single displacement reaction?
500
When using inert electrodes to electrolyze lead bromide, at the cathode, lead atoms are produced from lead ions and at the anode, bromine molecules are produced from bromide ions.
What is a redox reaction?
500
Used to absorb the high speed neutrons bombarding the fuel rods and therefore not allow an explosion to occur in a nuclear reactor
What is control rods?
500
Reason why the concentration of the reactants and products is the same when a reversible reaction is at equilibrium
What is the rate of the forward and backwards reaction are the same.
500
Reason why you cannot get sick from touching coins?
What is transition metals are poisonous to bacteria. Coins are self sterilizing!