Chemistry Review Flashcards
chem key terms
1
Q
Valence electrons
A
electrons in the outermost shell of an atom
2
Q
Cations
A
ions when metals lose electrons
positive charge
3
Q
Anions
A
non-metals when they gain electrons
negative charge
4
Q
Ionic compounds
A
ionic bonding between metals and nonmetals
5
Q
molecular compounds
A
nonmetals forming a covalent bond (sharing electrons)
6
Q
covalent bond
A
sharing electrons
7
Q
ionic bond
A
transfered electrons
8
Q
Synthesis reaction
A
A + B -> AB
9
Q
Decomposition reaction
A
AB -> A + B
10
Q
Single displacement
A
A + BC -> AC + B
11
Q
Double displacement
A
AB + CD -> AD + CB
12
Q
Acid
A
molecular compounds that produce H+ in solutions
13
Q
Anion
A
Ions that gained electrons
two nonmetals
14
Q
Base
A
ionic compounds with low pH that produce OH-
15
Q
Binary compound
A
a substance made of two different elements only
