Biology 6.1 Vocab

Front

Building blocks of matter: _______

Back

atoms

Front

Neutrons and ______ are at the center of an atom.

Back

Protons

Front

Protons are ______ charged.

Back

Positive

Front

______ of an element are identified by adding protons and neutrons in the nucleus.

Back

Isotopes

Front

Particles with no charge: ______

Back

Neutrons

Front

A ______ is a pure substance formed when two or more different elements combine.

Back

Compound

Front

Chemical bond formed by shared electrons:

Back

Covalent Bond

Front

A _______ is the process of reorganizing atoms into different substances.

Back

Chemical Reaction

Front

A ______ is a substance that lowers activation energy for a chemical reaction.

Back

Catalyst

Front

Mixtures with acids or bases to maintain pH.

Back

Buffers