College Biology: Chapter 2 Vocab Quizs

Compounds

• Molecules in which atoms of different elements are held together

• Molecules that consist of only one type of atom

• Elements that cannot combine with others

• Simple substances that cannot be broken down

Cohesion

• Binding between unlike molecules. Low surface tension.

• Binding between like molecules. High surface tension.

• Binding between like molecules. Low surface tension.

• Binding between unlike molecules. High surface tension.

Solvent

• A substance that is dissolved

• A substance that increases the temperature

• The substance in which the solute dissolves

• A type of chemical reaction

Functional Group

• A specific configuration of atoms commonly attached to the carbon skeletons of organic molecules and involved in chemical reactions.

• A type of chemical bond that involves the sharing of electron pairs between atoms.

• A large molecule composed of many repeated subunits, known as monomers.

• A process by which organic compounds are broken down into simpler substances.

Ions

• Neutral atoms that have neither gained nor lost electrons

• Charged atoms that have gained or lost electrons

• Atoms that are always positively charged

• Atoms that are always negatively charged

Phosphate group

• One positive charge

• Two negative charges

• No charge

• Three positive charges

Organic compounds

• Compounds containing carbon

• Compounds containing nitrogen

• Compounds containing oxygen

• Compounds containing hydrogen

Hydrophobic

• Water-loving molecules; charged and polar compounds

• Water-fearing molecules; uncharged and non-polar compounds

• Molecules that dissolve easily in water

• Molecules that are highly reactive with water

Atomic Number

• The number of neutrons in the nucleus of an atom.

• The number of protons in the nucleus of an atom. Written as a subscript to the left of its symbol.

• The total number of electrons in an atom.

• The mass of an atom measured in atomic mass units.

Endothermic reaction

• A reaction that releases thermal energy in the form of heat

• A reaction that absorbs thermal energy in the form of heat

• A reaction that occurs at a constant temperature

• A reaction that produces light energy