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chem
Chemistry exam 1
| Question | Answer |
|---|---|
| What is chemistry | A type of physical science |
| What is a atom | the smallest element |
| What is a element | substances that can't be broken down |
| What is a compound | substances that can be broken down |
| What is Homogenous | a mixture that is uniform in composition |
| What is Heterogenous | a mixture that is not uniform in composition |
| What is quantitive | changing in temperature or numbers |
| what is qualitative | changing in color or in other ways |
| What is mm | L |
| What is mL | V |
| What is kg | M |
| What is L | V |
| What is g | M |
| What is cubic centimeter | L |
| What is m | L |
| what is mg | M |
| What is density | ratio of mass to volume |
| who developed the atomic theory | John dalton |
| who discovered the electron | JJ thomson (cathode ray) |
| who discovered the nucleus | Ernest Rutherford (gold foil) |
| Bohr | the electron can circle the nucleus only in allowed path or orbits |
| most of the mass in an atom is from | protons and neutrons |
| most of the volume in a atom is from | electron clouds |
| what is a isotope | atom has the same # of element and different 3 of mass |
| what is a ground state | state when an atom has high potential |
| what is the orbital S shape | spherical |
| what is the orbital P shape | dumbbell |
| how many orbitals are in s | 2 |
| how many orbitals are in p | 6 |
| how many orbitals are in d | 10 |
| how many orbitals are in f | 14 |
| Hunds rule | the statement that has no 2 electrons in the same atom can have the same 4 quantum numbers |
| Aufbau principle | the statement that says orbitals of equal energy are occupied by 1 electron before pairing up |
| who added Noble gases | Ramsey |
| who arranged the elements according to their chemical and physical properties | Mendeleev |
| Alkali metals | group 1 |
| alkaline earth metals | group 2 |
| halogens | group 17 |
| noble gases | group 18 |
| what is ionization energy | energy required to remove energy |
| what group has a higher ionization | non metals |
| what is electronegativity | tendency of an atom to attract electrons |
| which element has the highest electronegativity | fluorine |
| what is a chemical bond | the difference in electronegativity |
| Electrons that are involved in chemical bonding | valence electrons |
| what is octet rule | having a full set of 8 valence electrons |
| what group doesn't chemically bond with others | noodle gases |
| what type of chemical bonds show in Lewis structure | covalent |
| what is nuclear reaction | changing in identity or characteristics of the nucleus |
| What is Fusion | the splitting of the nucleus |
| what is Fission | the joining of 2 smaller nuclei to form to a larger one |
Created by:
laniecruz
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