Chapter 4 definitions Flashcards
1
Q
valence electrons
A
an atom’s outermost electrons
2
Q
molecule
A
2 or more atoms linked together to make a substance with unique properties
3
Q
covalent bond
A
a chemical bond that is made by sharing electrons
4
Q
polar molecule
A
a covalent molecule that has an uneven distribution of electrons, resulting in slight charges within the molecule itself
5
Q
nonpolar molecule
A
a covalent molecule that has an even distribution of electrons so there are no net charges in the molecule itself
6
Q
Law of Mass Conservation
A
In any non-nuclear process, the total mass of everything involved must remain the same.
7
Q
hydrogen bond
A
a weak bond between certain kinds of molecules caused by the attraction of a hydrogen atom in one molecule to an unshared pair of electrons on the other molecule
