Chem Chapter 4 Vocab

subatomic particle carrying charge equal to but opposite of electrons

• electrons

• neutrons

• protons

• mass number

reaction that includes a change in an atom's nucleus

• nuclear reaction

• amu

• radioactive decay

• radiation

unstable nuclei lose energy by emitting radiation in spontaneous way

• radiation

• nuclear reaction

• radioactive decay

• beta particle

radiation deflected toward the negatively charged plate

• radiation

• alpha radiation

• alpha particle

• electrons

contains 2 p+ and 2 n and has 2+ charge attracted to negatively charged plate

• Helium-4

• alpha particle

• protons

• alpha decay

type of equation that shows atomic numbers and mass numbers of the particles involved, conserving mass number in nuclear equations

• nuclear equation

• nuclear reaction

• nuclei

• nucleus

radiation deflected toward positively charged plate

• positive radiation

• radiation

• beta radiation

• alpha radiation

electron w/ a 1- charge

• proton

• amu

• electron

• beta particle

high energy radiation that possesses no mass

• alpha radiation

• gamma ray

• radiation

• beta radiation

negatively charged particles part of all forms of matter

• protons

• neutrons

• electrons

• mass number