2.2 Chemical Bonds Flashcards
a negative ion formed by gaining electrons
anion
a positive ion formed by losing electrons
cation
an interaction between two or more of the same or different elements that result
in the formation of molecules
chemical bond
are made up of different types of atoms held together by chemical bonds
compound
shows how many and which atoms make up a molecule
chemical formula
occur when two or more atoms bond together to form molecules or when
bonded atoms break apart
chemical reactions
a type of strong bond between two or more of the same or different elements;
forms when electrons are shared between elements
covalent bond
an atom’s ability to attract a shared pair of electrons more closely to its own
nucleus
electronegativity
the movement of electrons from one element to another
electron transfer
a weak bond between partially positively charged hydrogen atoms and partially
negatively charged elements or molecules
hydrogen bond
an atom or compound that does not contain equal numbers of protons and electrons, and
therefore has a net charge
ion
a chemical bond that forms between ions of opposite charges
ionic bond
a type of covalent bond that forms between atoms when electrons are
shared equally between atoms, resulting in no regions with partial charges as in polar covalent
bonds
nonpolar covalent bond
a type of covalent bond in which electrons are pulled toward one atom and
away from another, resulting in slightly positive and slightly negative charged regions of the
molecule
polar covalent bond
the substances that are formed at the end of a chemical reaction (usually on the right
side of a chemical equation
products