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
JPChapter 2
Exam#1
| Question | Answer |
|---|---|
| Law of Mutliple Proportions | if 2 elements can combine to form more than one compound- i.e. CO and CO2 (will do so in ratios of simple whole numbers, i.e. 1:1 1:2 in prev case) |
| Rutherford | postulated that a paticles (nuclei that have lost their two electrons, and weigh much more than do electrons) should mostly go through goil foil, maybe with a little deflection from electrons; not so |
| Proton | positivally charged particles |
| Electron | negativally charged particles-1/1800 the mass of a proton or neutron |
| Neutrons | neutral mass- slightly higher mass than a proton |
| Atomic Number | number of protons- listed as whole number on periodic table |
| Mass Number | total number of protons and neutrons |
| Isotope | two or more atoms that have the same number of protons but different number of neutrons |
| Nuclide | another term for one particular isotope |
| Group | vertical column, see shared properties- 1-18 |
| Period | horizontal rows- end with noble gases |
| Metal | malleable (can be pounded into thin sheets) and ductile (can be pulled into wires), they're lustrous and they conduct heat and elecrticity well (L) |
| Non-Metal | usually gases or soft solids that don't conduct electricity or heat (R) |
| Group 1A | alkali metals |
| Group 2A | alkali earth metals |
| Group 7A | halogens |
| Group B | transition metals |
| Molecule | an aggregate of at least 2 atoms held together in a definite arrangement by chemical forces (chemical bonds)- can be a pure element (H2), or a compound (H2O) |
| Chemical Formulas | indicates the types of elements present and their relative proportions- ex. Na, H2, H2O, CO |
| Ionic Compound | made up of positive and negative ions held together by electrostatic forces- metal (+) with mno-metal (-) - ex. NaCl, Fe2O3, Mg(NO3)2, NaNO3 |
| Ion | an atom or group of atoms possession a net positive or negative charge |
| Cation | lose electron(s), have a positive charge- i.e. Na+ |
| Anion | gain electron(s), have negative charge- i.e. Cl- |
| Neutral Object | contain equal numbers of positively and negatively charged particles |
| Molecular Formula | show the number and type of each element present in a compound |
| Organic Compounds | compounds containing carbon and a small number of other elements |
| Hydrocarbons | are made of H and C, have certain functional groups that have predictable chemical properties |
| Empirical Formula | the lowest whole number of elements in a compound |
| Monoatomic Ions | ions of single atoms- i.e. MgCl2, Kl |
| Binary Ionic Compounds | ionic compounds with two elements |
| Polyatomic Ions | ions made up of two or more atoms- i.e. NO3= nitrate |
| Molecular compounds | contain discrete molecular units- usually non-metals |
| Binary Molecular Compounds | compounds named with the name and number of the first element followed by the name and number of the second element with its ending changed to "-ide"- i.e. HCl= hydrogen chloride, SiC= silicon Carbide |
| Acid | produce H+ (in the form of H3O+) when dissolved in water- their formulas contain one or more H group in addition to an anion |
| Hydrate | a substance that contains water molecules weakly bound in its crystals |
| Chemical Reaction | indicates conversion of reactants to products- could be indicated by color chang, ppt, gas , heat, or nothing, rearrangements of atoms |
| Chemical Equation | shorthand for what you start with going to what you get (balancing by inspection... |
Created by:
jpclark
Popular Chemistry sets