Parts of Atom
Models of Atoms
More Atoms
More Atoms
Periodic Table
100
p. 125 Smallest particle of an element.
What is an atom?
100
p. 125 Thought that atoms were like smooth, hard balls that could not be broken into smaller pieces.
What is Dalton's Atomic Theory?
100
p. 130 Atoms of the same element that have different numbers of neutrons are called
What is isotopes?
100
Is only 1/2,000 the size of the proton or neutron
What is an electron?
100
p. 137 A representation of an element usually consisting of one or two letters.
What is a chemical system?
200
p. 126 Negatively charged particles
What is an electron?
200
p. 126 He suggested that atoms had negatively charged electrons embedded in a positive sphere.
What is Thomson's model?
200
p. 130 Sum of the protons and neutrons in the nucleus of an atom.
What is mass number?
200
Average mass of all the isotopes of an element
What is atomic mass?
200
p. 137 Top number of each square in the periodic table?
What is atomic number?
300
p. 127 Tiny region in the center of an atom.
What is a nucleus?
300
p. 126 Found the atom is filled with mostly empty space with a tiny center.
What is Rutherford's model?
300
Number of protons in the nucleus of an atom.
What is the atomic number?
300
p. 132 Name of creator of the periodic table
Who is Mendeleev?
300
p. 137 Bottom nuber of each square in the epriodic table.
What is atomic mass?
400
p. 127 Positively charged particles.
What is a proton?
400
p. 127 If the electrons' orbits were flattened they would resemble the rings of an onion.
What is Bohr's model?
400
Protons are about the same size as
What is a neutron?
400
p 132 Arrangement of elements showing the repeating pattern of their properties
What is the epriodic table?
400
p. 136 Horizontal rows in the periodic table.
What is periods?
500
p. 128 Has no electric charge and is found in the nucleus.
What is a neutron?
500
p. 127 Electrons move rapidly in every direction around the nucleus.
What is a Cloud model?
500
p 133 Can be predicted by its location on the periodic table.
What is properties of an element?
500
4 classes of elements each with a different color in the periodic table
p. 136 What are metals, semimetals, nonmetals, and inert gases?
500
p. 136 Vertical columns of the periodic table.
What is groups?
M
e
n
u