FA20 Biology Chapter 4 Vocabulary Quiz

Measure of the average energy of random motion of particles in a substance

• trace element

• temperature

• chemical reaction

• atomic number

Atom that has become electrically charged as a result of gaining or losing an electron

• ion

• base

• proton

• ionic bond

Substance in a solution that dissolves the other substance and is present in the greater amount

• solvent

• element

• compound

• solute

Breaking of old and formation of new chemical bonds that result in new substances

• atomic number

• chemical reaction

• thermal energy

• temperature

Chemical bond that occurs when an atom transfers an electron to another atom

• covalent bond

• electron

• compound

• ionic bond

Uniform mixture of two or more substances

• cohesion

• molecule

• solution

• adhesion

Element critical to health that makes up less that 0.01 percent of body mass

• ionic bond

• trace element

• polar molecule

• temperature

Tendency of molecules of the same kind to stick to one another

• adhesion

• cohesion

• compound

• solution

Number of protons in an atoms nucleus, is unique for each element

• trace element

• atomic number

• polar molecule

• chemical reaction

Two or more atoms held together by covalent bonds

• molecule

• electron

• nucleus

• solution