Flashcards
Untitled_2
Cards in this deck (41)
- 1Who is Democritus?the first person to suggest the idea of atoms in the 4th century
- 2Who is John Dalton?3 p
- 33) Who is JJ Thomson?Electrons. Cathode Ray Tube Experiment
- 44) Who is Ernest Rutherford ?Oil drop experiment. Discovered nucleus and gold foil experiment
- 54) Who is Milikan?American physicist who measured the charge of the electron, proving Einsteins photoelectric equation.
- 66) Identify the charge of protons, neutrons, and electronsProtons are positive. Neutrons have no charge or neutral charge. Electrons have negative charge.
- 77) Identify the relative mass for protons, neutrons, and electrons.Protons's relative mass 1 amu. Neutrons's relative mass 1 amu. Electrons's relative mass 1-2,000 amu
- 89) What is the overall charge of the nucleus of an atom?Positive
- 910) Define ionAn atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
- 1011) Define isotopesame atomic # same amount of protons. Different amount of neutrons
- 1112) What are the two types of ions that can formCation and Anion
- 1213) What is the difference between oxidation and reductionOxidation is the loss of electrons. Reduction is the gain of electrons
- 1314) How can you determine the atomic number of an atomThe amount protons in the nuclei
- 1415) How can you determine the mass number of an atom?protons + neutrons
- 1516) How can you determine the number of protons an atom hasAtomic number
- 1617) How can you determine the number of electrons an atom hasIf the atom is neutral than you can tell by the amount of protons. If not neutral you can tell by the charge
- 1718) How can you determine the charge of an atom/ionmck
- 1819) What is the difference between atomic mass and mass numberAtomic mass is also known as atomic weight. Atomic mass is the weighted average mass of an atom of an element based on the relative natural abundance of that element's isotopes. Mass number is a count of the total number of protons and neutrons in an atom's nucleus.
- 1920) When using isotopic notation, what value goes in the upper left?mass number
- 2021) When using isotopic notation, what value goes in the lower leftAtomic number
- 2122) When using isotopic notation what number goes in the upper rightThe elements charge
- 2223) How do we determine the average atomic mass of an element?M.A.D
- 2324) How do we determine the number of atoms of each element in a compoundlower right
- 24How do we know if a bond is ionic or covalentIf the atom is ionic it will be combined of a metal and a nonmetal. If the atom is covalent it will be combined of 2 metals
- 2526) What happens to electrons in an ionic bond?they are transferred
- 2627) What happens to electrons in covalent bondsThey're shared
- 2728) What value do we use to convert from moles to mass1
- 2829) Convert 3.5 moles of Aluminum to grams94.5 grams of Aluminum
- 2930) Convert 2.75 grams of Aluminum to atoms8.68 atoms
- 3031) What is the difference between unsaturated, saturated, and supersaturated?Not saturated, having the power to dissolve still more of a substance.Saturated holding as much water or moisture as can be absorbed. Increase the concentration of (a solution) beyond saturation point.
- 3132) How can you tell the difference between unsaturated, saturated, and supersatured if using a solubility curve?If unsaturated it would be under the curve. If saturated it would be on the curve. If supersaturated it would be above the curve
- 3233) What are three endothermic phase changes?solid - liquid
liquid - gas
solid - gas - 3334) What are three exothermic phase changes?gas - solid
gas- liquid
liquid - solid - 3435) Which phase changes are making attractive forces ?endothermic
- 3536) Which phase changes are breaking attractive forces?exothermic
- 3637) What is a alpha particle ?a helium nucleus emitted by some radioactive substances, originally regarded as a ray.
- 3738) What is a beta particle ?a fast-moving electron emitted by radioactive decay of substances. (The emission of beta particles was originally regarded as a ray.).
- 3839) What is a gamma particle?Gamma radiation, also known as gamma rays, and denoted by the Greek letter γ, refers to electromagnetic radiation of high frequency and therefore high energy per photon.
- 3940) What rules do you follow when doing a nuclear equation?Balanced on each side of the arrow
- 4041) What is a half lifethe time taken for the radioactivity of a specified isotope to fall to half its original value.
- 4142) How can we calculate the mass remaining when a radioactive sample decays?divide by 2 as many times necessary
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- Flashcards on Untitled_2, created by zariyah.spence on 22/11/2013.
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