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Chemistry

Atoms

9th

48 Terms
😃 Not studied yet (48)
Is equal to the number of protons of an element Is the identifying number on the periodic table
Is the weighted average of the mass of the isotopes for an element Is the decimal number on the periodic table
4 amu in mass +2 in charge Very Low Penetration No Biological Hazard unless inhaled Equivalent to a helium 4-nucleus Emitted during Radioactive decay
0 amu in mass -1 Charge Low Penetration Biological Hazard to skin and eyes Very Fast Emitted during Radioactive Decay
0 Mass 0 Charge Very High Penetration Biological Hazard to whole body; causes mutations Accounts for most of the energy lost during radioactive decay Does not add or subtract to the number of protons, neutrons, and electrons.
A particle made of 2 protons and 2 neutrons is ejected from the nucleus. Essentially subtracts 2 protons and 2 neutrons form an element.
A neutron is broken down into a proton and a beta particle (which is essentially an electron) and the beta particle is ejected from the nucleus at high speeds. The original Neutron becomes a proton and changes the atomic number. Essentially subtracts a proton from an element.
The nucleus has too much energy and releases them as electromagnetic waves.
A form of electromagnetic energy that has no mass