WorksheetsCollege Biology: Chapter 2 Vocab Quizs
Total questions: 20
Worksheet time: 10mins
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
Bases
- Acquire protons during chemical reactions
- Donate protons during chemical reactions
- Neutralize acids by forming salts
- Release hydroxide ions in solution
Molecule
A group of atoms bonded together, covalent.
A single atom that cannot bond with others.
A mixture of different substances without any bonding.
A type of chemical reaction involving atoms.
Covalent Bond
Sharing of protons between atoms.
Sharing of electrons between atoms.
Transfer of electrons between atoms.
Attraction between charged ions.
Valence shell
Outermost shell
Innermost shell
Subshell
Noble gas configuration
Mass number
Number of protons and neutrons. Superscript to the left of the symbol
Total number of electrons in an atom
Number of protons only
Number of neutrons only
Hydrogen Bonds
Strong covalent connections
Weak electrical attractions
Permanent dipole interactions
Ionic bonds
Polar
Charges are at opposite ends of water molecule; oxygen atoms have partial negative charge; hydrogen atoms have partial positive charge
All atoms in a water molecule have equal charge distribution
Water molecules are non-polar due to symmetrical shape
Hydrogen atoms have a partial negative charge while oxygen has a partial positive charge
Molecules
Substances held together by ionic bonds
Substances held together by covalent bonds
Substances that are always gases
Substances that cannot be broken down
Specific heat
The amount of energy required to raise the temperature of 1 gram of a substance by 1 degree Celsius
The total energy contained in a substance
The energy required to change a substance from solid to liquid
The energy needed to increase the temperature of 1 liter of water by 1 degree Celsius
Heat of vaporization of water
- Very high in water
- Low in water
- Moderate in water
- Variable in water
