Name: ____________________________________
Date ______________________ Period _____
ATOM Review Sheet
Complete this review sheet on your iPad. You may print it out if you are not able to
take your iPad home. Try to fill it out without any resources except an unlabeled
periodic table. That way you can figure out what you need to study.
1. Fill in the Following Table
Subatomic Particle
Proton
Neutrons
Electron
Location
Nucleus
Nucleus
Orbitals outside
the nucleus
Charge
Positive
neutral
negative
Mass (amu)
1 amu
1 amu
1/2000 amu
2. Write the main contribution to the atomic model of each of the people below
Democritus
John Dalton
JJ Thomson
Ernest Rutherford
Niels Bohr
Erwin Schrodinger
First came up with the idea of an atom and named it
“atomos” Greek for indivisible
Imagined the atom like a billiard ball: a solid discreet
neutral particle of matter
Discovered the electron and came up with the plum
pudding model. Negative particles in positive substance
Discovered the nucleus as a positive dense part of the
atom
Electron Shells outside the nucleus that contained certain
numbers of electrons at different distances from the
nucleus
Came up with the electron cloud model of the atom where
one cant determine the location of an electron, but can
know a general space where they are likely to be found
3. Record the missing information below: Assume neutral atoms
Name of Element
Chlorine
Potassium
Helium
Oxygen
Carbon
Tin
Aluminum
Symbol
Cl
K
He
O
C
Sn
Al
Protons
17
19
2
8
6
50
13
Neutrons
18
20
2
8
6
69
14
Electrons
17
19
2
8
6
50
13
4.
Name of
Group
Halogens
Alkali Metals
Alkaline
Earth metals
Noble Gases
Location on the
periodic table
Second to last
column on the
right
Column all the
way to the left
Second column
in on the left
Column farthest
to the right
5.
Type of Bond
Main Properties of the family
Reactive, have 7 valence electrons, can form
covalent and ionic bonds, non-metals. All three
phases
Metals very reactive good conductors of
electricity and heat, silver
Metals a little less reactive than Alkali Metals, 2
valence electrons, form ionic bonds
Un-reactive, non metals, gases, complete outer
shell of electrons
What happens to electrons in
this type of bond?
Ionic
A non metal and a metal
Transferred, gaines/lost
Covalent
2 non metals
Shared
6. Write your own definition for the following words:
Valence Electron
Ion
Isotope
Period (per table)
Family (per Table)
Atom
Nucleus
Atomic Number
Atomic Mass
Subatomic particle
Forms between?
Electrons in the outer most energy level, responsible for
bonding, reactivity
A charged atom that has gained or lost electrons
A version of an element that has a different number of
neutrons
Horizontal Rows, have same number of energy levels as the
period/row number
Vertical Columns: elements in families have the same
number of valence electrons
The smallest piece of an element that still has all the
properties of that element
The center of an atom that contains the protons and
neutrons. Where all the mass of the atom is found
The smaller number for an element on the periodic table that
represents the number of protons as well as the number of
electrons in a neutral atom
The mass of one atom of an element: made up of the
neutrons and protons
The parts that make up atoms: Protons neutrons and
electrons
7. All elements in a period have the same number of energy levels
8. All elements in a family have the same number of valence electrons
9. In a Bohr Diagram the first energy level can hold 2 electrons, the second can hold
8 electrons and the third can hold 18 electrons
10. Bohr’s model is useful for calculating the number of valence electrons.
11. Lewis Dot structures consist of the Symbol of an element surrounded by dots
representing the valence electrons (2 words).
12. An atom that loses an electron will become more positive
13. An atom that gains an electron becomes more negative
Chemical Bonds:
Ionic bonds form between a metal and a non-metal. In an ionic bond electrons are
transferred from one atom to another. Both atoms become oppositely charged ions
that are attracted to each other.
Covalent Bonds form between two non-metals. In a covalent bond electrons are
shared so that each atom has a complete outer energy level usually consisting of 8
electrons like the nearest noble gas.