CHE: Chapter 4 Structure of the Atom

a particle with two protons and two neutrons, with a 2+ charge; is equivalent to a helium-4 nucleus, can be represented by α; and is emitted during radioactive decay

• alpha particle

• alpha radiation

• beta particle

• gamma ray

Tags

NGSS.HS-PS1-8

radiation that is made up of alpha particles; is deflected toward a negatively charged plate when radiation from a radioactive source is directed between two electrically charged plates

• alpha radiation

• beta radiation

• cathode ray

• radiation

the smallest particle of an element that retains all the properties of that element; is electrically neutral, spherically shaped and composed of electrons, protons, and neutrons

• atom

• electron

• nucleus

• neutron

Tags

NGSS.MS-PS1-1

the weighted average mass of the isotopes of that element

• atomic mass

• atomic mass unit

• atomic number

• mass number

Tags

NGSS.HS-PS1-8

one-twelfth the mass of a carbon-12 atom

• atomic mass unit

• atomic mass

• mass number

• atomic number

the number of protons in an atom

• atomic number

• mass number

• atomic mass

• atomic mass unit

a high-speed electron with a 1- charge that is emitted during radioactive decay

• beta particle

• beta radiation

• alpha particle

• gamma ray

Tags

NGSS.HS-PS1-8

radiation that is made up of beta particles; is deflected toward a positively charged plate when radiation from a radioactive source is directed between two electrically charged plates

• beta radiation

• alpha radiation

• nuclear reaction

• radioactive decay

radiation that originates from the cathode and travels to the anode of a cathode-ray tube

• cathode ray

• alpha radiation

• gamma ray

• radiation

Tags

NGSS.HS-PS4-3

a negatively charged, fast-moving particle with an extremely small mass that is found in all forms of matter and moves through the empty space surrounding an atom's nucleus

• electron

• proton

• neutron

• nucleus