| A | B |
|---|
| located in nucleus | protons and neutrons |
| not located in nucleus | electrons |
| have a positive charge | protons |
| have no charge | neutrons |
| have a negative charge | electrons |
| has (significant) mass | protons and neutrons |
| mass of an atom is located in the... | nucleus |
| max. # electrons in first orbit (shell, energy level) | 2 |
| atomic number is the ... | number of protons |
| the number of electrons equals the number of ... | protons |
| atomic mass is the number of ___ + ___ | protons + neutrons |
| max. # of electrons in each orbit (shell, energy level) | 2, 8, 18, 32 |
| atoms with same number of protrons but different number of neutrons | isotopes |
| opposite charges ... | attract |
| same charges ... | repel |
| 100 degrees K = ____ degrees C | -173.15 |
| 100 degrees C = ____ degrees K | 373.15 |
| Iron has 26 protons and a mass of 55.845, how many neutrons? | 30 |
| Iron has 26 protons and a mass of 55.845, how many electrons? | 26 |
| Iron has 30 neutrons and a mass of 55.845, how many protons? | 26 |
| atoms often give off light when energy is ... | lost |
| when electrons are at lowest possible level... | ground state |
| would an atom with electrons 2,8,4 be ground state? | yes |
| would an atom with electrons 2,8,14, 1 be ground state? | no |
| Greeks thought there were 4 elements. name them... | earth, air, fire, water |
| atomic mass - # protons = ___ | # neutrons |
| atomic mass - # neutrons = ___ | # protons |
| # protons + # neutrons = ___ | atomic mass |
| if atomic # is 24 & atomic mass is 51.996, how many electrons, protons, and neutrons? | 24 protons & electrons, 28 neutrons |
| atomic mass is not a whole number because... | there are different isotopes with varying number of neutrons |
| degrees K = degrees C ____ 273.15 | + |
| degrees C = degrees K ____ 273.15 | - |
