Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Unit 2: A-B Test
| Question | Answer |
|---|---|
| Redox Reactions | Oxidation and Reduction |
| Oxidation | -Lose electrons -Originally, meant the combination of an element with oxygen to form an oxide Ex. Mg : →Mg2+ + 2e- |
| Reduction | -Gain electrons -Ex. : S : : + 2e- → : : S : : 2- |
| Reducing Agents | -opposite of the reducing |
| Oxidizing Agent | -opposite of reducing |
| Electrometallurgy | Electric current supplies electrons |
| Pyrometallurgy | Treating with thermal energy (heat) to provide electrons |
| Hydrometallurgy | Using water with chemicals to gain electrons |
| Five nonmetals that are gas at RT | Hydrogen, Oxygen, Nitrogen, Fluorine, Chlorine |
| Two liquid elements | Bromine, Mercury |
| protons | subatomic particle with a charge of +1 |
| Electrons | subatomic particle with a charge of -1 |
| Neutrons | subatomic particles with no charge number of neutrons determines the isotope of the element |
| Isotopes | Isotopes are different types of atoms of the same element that have a different number of neutrons |
| Atomic Number | • Always the number of protons the element has • Uniquely identifies the element • Always a whole number |
| Mass Number | • Number of Protons and Neutrons (found in nucleus)…always a whole number. |
| Atomic Mass (amu) | Mass of protons, electrons, and neutrons AVERAGED |
| metals | • Lose electrons more easily that Non-Metals • Have higher melting points than non-metals • Are shiny (lustrous) • React with acids…many also react to copper (II) chloride • Conduct electricity and heat • Malleable/ductile |
| non metals | • Gain electrons easily (anions) • Dull and brittle • Poor conductors of heat and electricity • Lower melting points than metals---also lower densities |
| metalloids | • Physically and chemically between metals and non-metals • Boron (B), Silicon (Si), Germanium (Ge), Arsenic (As), Antimony (Sb), Tellurium (Te), Polonium (Po) |
| Atmosphere | •Layer of gases held by the earth’s gravity •75% of the atmosphere is within 6.8 miles of the earth’s surface •78% is nitrogen (N2), 21% is oxygen (O2), 0.9% argon (Ar), and the rest, trace gasses |
| Hydrosphere | The combined mass of water on, under and over the surface of the earth |
| Lithosphere | The Crust and Upper Mantle Provides greatest variety of chemical resources |
| Mineral | • Naturally occurring solid chemical substance formed through geological processes |
| Ore | • Naturally occurring mineral or rock (an aggregate of minerals) with important elements such as metals • Is mined to extract a metal or other material |
| Decisions about mining at a specific site | • Quantity of ore at the site • % of metal in the ore • Type of mining needed to extract the metal from ore • Distance of refining • Supply vs demand • Environmental impact |
Created by:
Jjfrenchie
Popular Chemistry sets