Ch2 The Chemical Foundation of Life

Front

What is a substance that prevents a change in pH by absorbing or releasing hydrogen or hydroxide ions?

Back

Buffer

Front

What type of covalent bond forms as a result of unequal electron sharing, creating slightly positive and negative charged regions in a molecule?

Back

Polar covalent bond

Front

What is a molecule that donates hydroxide ions or binds excess hydrogen ions, decreasing their concentration in a solution?

Back

Base

Front

What do you call two or more atoms chemically bonded together?

Back

Molecule

Front

What is the negatively charged subatomic particle that resides outside of the nucleus in the electron orbital?

Back

Electron

Front

What is the term for a substance that increases the concentration of hydrogen ions in a solution?

Back

Acid

Front

What is the principle that states atoms tend to bond in such a way that they have eight electrons in their outer shell?

Back

Octet rule

Front

What type of bond is formed when electrons are transferred from one atom to another?

Back

Ionic bond

Front

What is the term for the attraction between molecules of the same substance?

Back

Cohesion

Front

What is the term for the attraction between molecules of different substances?

Back

Adhesion