1
electron found in the outer layer of an atom
2
charge of an ion
3
small number in a chemical formula that indicates the number of atoms of that element in a compound
4
element touching the jagged line on the periodic table
5
substances at the start of a chemical reaction
6
scientist who created one of the first periodic tables and used it to predict the existence of unknown elements
7
all atoms want to have 8 valence electrons to be stable
8
two or more atoms attached by chemical bonds
9
type of bond created by atoms sharing electrons
10
subatomic particle involved in forming chemical bonds
11
element found on the right side of the jagged line on the periodic table
12
inert element found in group 18
13
atoms that lose electrons will have a _____________ charge
14
substances created in a chemical reaction
15
element in group 17
16
charge of a neutron
17
row of the periodic table
18
elements in group 1 are called _________________ metals
19
subatomic particle with a positive charge
20
element found on the left side of the jagged line on the periodic table
21
this prefix means four in the name of covalent compounds
22
the area in an atom where electrons are found is called the electron _______________
23
not reactive
24
column in the periodic table
25
element with an atomic number of 54
26
type of bond created by the attraction of positive and negative ions
27
atoms with 5, 6, or 7 electrons will ___________ electrons to fulfill the octet rule
28
number of energy levels in an atom of tin
29
atom with a charge
30
number of valence electrons in an atom of helium
