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4 Atomic Structure
Early Models, Subatomic Particles,Periodic Table
| Question | Answer |
|---|---|
| What is the smallest particle of an element that keeps its chemical and physical properties? | atom |
| The negatively charged subatomic particles are called_________. | electrons |
| The small, positive, center of an atom is called the _________. | nucleus |
| The positively charged particle located inside the nucleus is called the ________. | protons |
| The subatomic particle without a charge and has a mass of 1amu is called the _________. | neutron |
| The number of protons in the nucleus of an atom is called the __________. | atomic number |
| The number of both protons and neutrons in the nucleus of an atom is called the __________. | mass number |
| Atoms of elements that have different numbers of neutrons are called _________. | isotopes |
| The mass of 1 proton or 1 neutron; 1/12 the mass of Carbon-12. | atomic mass unit |
| The average mass of all the isotopes of an element based on the percent abundance. | atomic mass |
| An arrangement of the elements shown in a table. | periodic table |
| The vertical columns on the periodic table are called _________. | groups (or families) |
| The horizontal rows on the periodic table are called _________. | periods |
| A glowing beam of light produced when a cathode ray tube is connected to electricity. | cathode ray |