Upgrade to remove ads
Chapter 2 The Chemical Bonds
Terms in this set (43)
An attraction between atoms that share one or more pairs of outer-shell electrons; symbolized by a single line between the atoms.
A measure of the relative acidity of a solution, ranging in value from 0 (most acidic) to 14 (most basic). The letters pH stand for potential hydrogen and refer to the concentration of hydrogen ions (H). 7 is neutral.
A liquid consisting of a homogeneous mixture of two or more substances, consisting of a dissolving agent, called the solvent, and a substance that is dissolved, called the solute.
A substance that increases the hydrogen ion concentration in a solution.
Polar covalent bond
A covalent bond between atoms that differ in electronegativity. The shared electrons are pulled closer to the more electronegative atom, making it slightly negative and the other atom slightly positive.
A subatomic particle with a single positive electrical charge and that is found in the nucleus of an atom
The dissolving agent of a solution. Water is the most versatile solvent known.
A type of covalent bond in which two atoms share two pairs of electrons; symbolized by a pair of lines between the bonded atoms.
weakest bond; when hydrogen in water attracts negatively charged particles in solution; easily broken
A chemical bond resulting from the attraction between oppositely charged ions.
A solution in which water is the solvent
A substance consisting of two or more elements in a fixed ratio.(i.e. table salt (NaCl)).
Anything that occupies space and has mass.
Number of protons in each atom of a particular element.
Rain, snow or fog with a pH below 5.6
A measure of heat intensity that represents the average kinetic energy of the molecules, regardless of volume.
a substance whose particles are dissolved in a solution
An atom with the same number of protons and a different number of neutrons from other atoms of the same element.
An atom that has gained or lost one or more electrons, thus acquiring a charge.
An ending material in a chemical reaction
The attraction of a given atom for the electrons of a covalent bond.
Non polar covalent bond
A type of bond that forms when electrons are shared equally between two atoms of similar electronegativity.
The small unit of matter that retains the properties of an element.
An attraction between two atoms, resulting from a sharing of outer-shell electrons or the presence of opposite charges on the atoms. The bonded atoms gain complete outer electron shells.
The approximate total mass of an atom; also called atomic weight. Given as a whole number, the atomic mass approximately equals the mass number.
(plural, nuclei) (1) An atom's central core, containing protons and neutrons. (2) The genetic control center of a eukaryotic cell.
An energy level representing the distance of an electron from the nucleus of an atom.
A starting material in a chemical reaction
the sum of the number of neutrons and protons in an atomic nucleus
The binding together of like molecules, often by hydrogen bonds
An element that is essential for life but required in extremely minute amounts
A chemical substance that resists changes in pH by accepting hydrogen ions from or donating hydrogen ions to solutions.
an electrically neutral particle (particle having no charge), found in the nucleus of an atom.
A compound resulting from the formation of ionic bonds; also called an ionic compound.
A group of atoms held together by covalent bonds., 2 or more atoms held together by covalent bonds
A molecule containing polar covalent bonds.
A measure of how difficult it is to stretch or break the surface of a liquid. Water has a high surface tension because of the hydrogen bonding of surface molecules.
An isotope whose nucleus decays spontaneously, giving off particles and energy.
A subatomic particle with a single negative electrical charge. One or more electrons move around the nucleus of an atom.
Thermal energy; the amount of energy associated with the movement of the atoms and molecules in a body of matter. Heat is energy in its most random form.
The making and breaking of chemical bonds, leading to changes in the composition of matter.
A substance that decreases the hydrogen ion (H) concentration in a solution.
A pure substance that cannot be broken down into other substances by chemical or physical means
This set is often in folders with...
BIO121 Chapter 1
BIO121 Chapter 2
BIO121 Chapter 3
BIO121 Chapter 4
You might also like...
Chapter 2 ( The Chemical Basis of Life)
Bio chapter 2 vocab
Biology Chapter 2 Vocabulary
Campbell: Concepts & Connections, Chapter 2