Ch. 1 Matter and Atoms Vocabulary

A small particle that is the building block of matter

• Atom

• compound

• matter

• molecule

Tags

NGSS.MS-PS1-1

the number of protons in an atom of an element

• atomic mass

• neutron

• atomic number

• electron

A substance containing atoms of two or more different elements chemically bonded together

• compound

• mixture

• substance

• atom

Tags

NGSS.MS-PS1-1

a negatively charged particle that occupies the space in an atom outside the nucleus

• compound

• electron

• mixture

• substance

the area outside an atom's nucleus where one or more electrons are found

• compound

• element

• empty space

• electron cloud

a substance that consists of only one type of atom

• element

• ion

• matter

• mixture

a mixture in which substances are not evenly mixed

• heterogeneous mixture

• homogeneous mixture

• substance

• molecule

a mixture in which two or more substances are evenly mixed but not bonded together

• homogeneous mixture

• isotope

• heterogeneous mixture

• substance

an atom that is no longer neutral because it has gained or lost an electron

• ion

• isotope

• mixture

• electron

atoms of the same element that have different numbers of neutrons

• isotope

• ion

• element

• compound