g6 Chapter 12 Atomic Theory

the smallest part of an element that can be identified as that element

• atom

• proton

• neutron

• electron

subatomic particle with a POSITIVE charge, found inside the nucleus

• electron

• neutron

• proton

• electron cloud

subatomic particle with a NEGATIVE charge, found outside the nucleus in the electron cloud

• proton

• electron

• neutron

• element

subatomic particle with NO charge, found inside the nucleus

• proton

• neutron

• electron

• mixture

center of an atom, made up of protons and neutrons

• element

• nucleus

• proton

• electron cloud

number of protons in the nucleus of an atom

• atomic mass

• atomic number

• nucleus

• compound

total mass of protons + neutrons in an atom, measured in Atomic Mass Units (AMU)

• atomic mass

• atomic number

• energy level

• mixture

substance that cannot be chemically broken down into simpler substances (ex: Sodium Na)

• element

• compound

• homogeneous mixture

• heterogeneous mixture

substance made up of 2 or more elements that are CHEMICALLY combined (ex: table salt NaCl)

• element

• compound

• homogeneous mixture

• heterogeneous mixture

Tags

NGSS.MS-PS1-5

two or more substances that have been PHYSICALLY combined (ex: salt water is H2O mixed with NaCl)

• element

• compound

• mixture

• neutron