Unit 1a Matter Vocabulary

the basic particle from which all elements are made

• particle

• atom

• molecule

• compound

a positively charged particle that is part of an atom's nucleus

• neutron

• positron

• electron

• proton

a small particle in the nucleus of the atom with no electrical charge

• proton

• electron

• photon

• neutron

a negatively charged particle that is found outside the nucleus

• photon

• neutron

• electron

• proton

the number of protons in the nucleus of an atom

• atomic mass

• element

• atomic number

• nuclear number

a pure substance made of two or more elements chemically combined

• mixture

• compound

• element

• molecule

a pure substance that cannot be broken down into other substances by chemical or physical means

• element

• compound

• mixture

• solution

a mixture in which pure substances are unevenly distributed throughout the mixture

• homogenous mixture

• solution

• heterogenous mixture

• compound

a mixture in which substances are evenly distributed throughout the mixture

• solution

• heterogenous mixture

• compound

• homogenous mixture

a neutral particle made of two or more atoms joined by covalent bonds

• compound

• element

• mixture

• molecule

Tags

NGSS.MS-PS1-1