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52 Cards in this Set
- Front
- Back
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Has helium nucleus |
Alpha emission |
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Distance traveled is 2-12 cm in air |
Alpha emission |
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Blocked by a sheet of paper close to the nucleus |
Alpha emission |
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An electron ejected from nucleus at a high speed |
Beta emission |
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Distance traveled several hundred cm |
Beta emission |
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Blocked by 1 cm thick piece of aluminum |
Beta emission |
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High energy burst of electromagnetic radiation from an excited nucleus (emission of a photon) |
Gamma emission |
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Distance traveled can pass completely through a person |
Gamma emission |
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Blocked by 5 cm thick piece of lead |
Gamma emission |
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Front (Term) |
Mass number 222 Atomic number 86 Number of neutrons 136 |
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Protons and neutrons |
Mass number |
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Number of protons |
Atomic number |
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Subtract mass number from atomic number |
Neutrons |
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Smallest particle of an element |
Atom |
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Same atomic number |
Element |
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Bromine |
Liquid non metal |
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Mercury |
Liquid at room temperature |
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Minute particle of which matter is composed; the smallest part of an element that can enter into chemical reaction |
Atom |
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Minute particle of which matter is composed; the smallest part of an element that can enter into chemical reaction |
Atom |
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Positively charged central core of an atom; contains most of the atoms mass |
Nucleus |
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Minute particle of which matter is composed; the smallest part of an element that can enter into chemical reaction |
Atom |
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Positively charged central core of an atom; contains most of the atoms mass |
Nucleus |
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Neutral particle of mass almost identical to that of a proton, but without electric charge |
Neutron |
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Minute particle of which matter is composed; the smallest part of an element that can enter into chemical reaction |
Atom |
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Positively charged central core of an atom; contains most of the atoms mass |
Nucleus |
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Neutral particle of mass almost identical to that of a proton, but without electric charge |
Neutron |
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Nuclear particle having a positively charge equal to +e (e being the charge on an electron) and a mass more than 1800 times that of an electron prot |
Proton |
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Minute particle of which matter is composed; the smallest part of an element that can enter into chemical reaction |
Atom |
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Positively charged central core of an atom; contains most of the atoms mass |
Nucleus |
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Neutral particle of mass almost identical to that of a proton, but without electric charge |
Neutron |
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Nuclear particle having a positively charge equal to +e (e being the charge on an electron) and a mass more than 1800 times that of an electron prot |
Proton |
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Very light, negatively charged particle that exists in the region around positively charged nucleus |
Electron |
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Minute particle of which matter is composed; the smallest part of an element that can enter into chemical reaction |
Atom |
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Positively charged central core of an atom; contains most of the atoms mass |
Nucleus |
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Neutral particle of mass almost identical to that of a proton, but without electric charge |
Neutron |
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Nuclear particle having a positively charge equal to +e (e being the charge on an electron) and a mass more than 1800 times that of an electron prot |
Proton |
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Very light, negatively charged particle that exists in the region around positively charged nucleus |
Electron |
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Number of protons in an atomic nucleus; identifies the element |
Atomic number |
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Average atomic mass for the naturally occurring element, expressed in atomic mass units |
Atomic weight |
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Average atomic mass for the naturally occurring element, expressed in atomic mass units |
Atomic weight |
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Mass unit equal to exactly one-twelfth the mass of a carbon-12 atom |
atomic mass unit |
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Total number of proton and neutrons in the nucleus |
Mass number |
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Total number of proton and neutrons in the nucleus |
Mass number |
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Substance whose atoms all have the same atomic number |
Element |
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Total number of proton and neutrons in the nucleus |
Mass number |
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Substance whose atoms all have the same atomic number |
Element |
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Definite group of atoms that are chemically bonded together and, as a group, electrically neutral |
Molecule |
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Atoms whose nuclei have the same atomic number but different mass numbers |
Isotopes |
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Atoms whose nuclei have the same atomic number but different mass numbers |
Isotopes |
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Electrically charged particle obtained from an atom or chemically bonded group of atoms by addition or removal of one or more electrons |
Ion |
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Zero degrees Celsius equals how much Kelvin |
373 K |
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Room temp in Celsius |
20 |
