1.
a pure substance that cannot be broken down into simpler substances: element
2.
Ag: silver
3.
Al: aluminum
4.
Al?: metal
5.
an atom of an element that has a different number of neutrons than another atom of the same element: isotope
6.
an element found in group 7A: halogen
7.
Ba: barium
8.
Be: beryllium
9.
Br: bromine
10.
C?: nonmetal
11.
Ca?: metal
12.
calcium: Ca
13.
carbon: C
14.
chlorine: Cl
15.
Cl?: nonmetal
16.
copper: Cu
17.
Cr: chromium
18.
F: fluorine
19.
Fe?: metal
20.
found in the first two and last six columns of the periodic table: representative element
21.
gold: Au
22.
H: hydrogen
23.
has a mass of 1 amu: proton, neutron
24.
iodine: I
25.
iron: Fe
26.
lead: Pb
27.
Li: lithium
28.
Mg: magnesium
29.
Mg?: metal
30.
N?: nonmetal
31.
neon: Ne
32.
neutral subatomic particle: neutron
33.
nitrogen: N
34.
number of protons and neutrons in the nucleus: mass number
35.
number of protons in an atom: atomic number
36.
oxygen: O
37.
phosphorus: P
38.
potassium: K
39.
Sb?: metalloid
40.
Si: Silicon
41.
small, dense center of atom: nucleus
42.
smallest particle of an element: atom
43.
sodium: Na
44.
subatomic particle outside nucleus: electron
45.
subatomic particle w/ -1 charge: electron
46.
sulfur: S
47.
symbol for atomic number: Z
48.
symbol for mass number: A
49.
What did Mendeleev do?: made the periodic table
50.
What did Rutherford do?: the gold-foil experiment
51.
What did the cathode-ray tube experiment do?: discovered electron
52.
What did the gold-foil experiment do?: protons have mass in nucleus
53.
What did Thomson do?: the cathode-ray tube experiment
54.
What kind of element is Si?: metalloid
55.
Who did the cathode-ray tube experiment?: Thomson
56.
Who did the gold-foil experiment?: Rutherford
57.
Who made the periodic table?: Mendeleev
58.
Zn: Zinc
59.
Zn?: metal
