Download Atomic structure and periodic table notes sheet

Atomic Structure and Periodic Table Notes
1. What are Atoms?
___________________________________________
___________________________________________
2. 400 BC- _________________ was the first
scientist to suggest that all matter is composed of
tiny, indivisible particles called atoms. (Atomos)
3. Elements are made up of atoms. Atoms are the
_______________ particle into which an element
can be divided and still retain its identity. An
element is matter made up of only _______ type of
atom.
4. The _________________________ was proposed
by ____________________ in the late 1700’s. This
theory was based on the experimentation and data
of other scientists.
-1932- __________________ discovered neutral
particles in the nucleus of an atom called a
_______________.
6. Today’s model of the atom is called a
________________ model which includes a dense
nucleus made up of ___________________ and
___________________. The ___________________
occupy a region of space outside of the nucleus and
orbit in an irregular manner.
Name of
Particle
Charge of
Particle
Location
Size/Mass
5. The Atomic Theory States:
1. ________________________________________
2. _________________________________________
3. ________________________________________
4. _________________________________________
7. After watching the WKRP video on the parts of an
atom- List 3 parts of an atom and the way each part
was described.
5. Since then, other scientists have expanded on our
understanding of Atoms in the following ways.
1.
___________________________________________
___________________________________________
-1897- ________________ used a cathode ray tube
to find negative particles within the atom, which he
named _______________________. (Plumb Pudding
Model)
-Early 1900’s- ____________________ directed a
beam of positively charged particles through a piece
of gold. He then created a new atomic model with a
dense _______________ charged nucleus. (Nuclear
Model)
-1913- _________________ further studied the
atom and proposed an atomic model with a dense
___________ nucleus with ___________ orbiting
around in definite pathways. (Planetary Model)
-1926- __________________ stated that electrons
can only exist in specified energy states. (Electron
Cloud Model)
2.
___________________________________________
___________________________________________
3.
___________________________________________
___________________________________________
8. PROTONS – have a _____________ charge, and
each has a mass of one ________ (atomic mass unit).
9. NEUTRONS- have _____ charge (sometimes
stated as neutral or zero charge), and each also has a
mass of one _________ (atomic mass unit).
10. ELECTRONS- have a _____________ charge, and
a very tiny mass if .0005 amu. The mass of electrons
are so small that they are usually ignored when
adding up the mass of the entire atom (almost 0).
Example:
Argon
Atomic Number _______
11. Atoms that are electrically ______________ will
have the _________ number of _________________
and ___________________.
12. The atomic mass is the total number of
___________________ and ____________________
in an atom’s nucleus.
13. The __________________ of an element tells
you the number of protons. In a neutral atom it also
tells you the number of electrons.
APE
_______________= _____________= ____________
14. The rounded ________________________ of an
element tells you the number of ________________
and ________________ in an atom. Therefore, the
rounded atomic mass minus the number of protons
(atomic #) tells you how many neutrons are present
in an atom of a particular element.
MAN
______________- ______________= ____________
A =P=E
M–A=N
15. We use Bohr Models to understand Atomic
structure and the reactivity of atoms.
When creating a Bohr Model the following rules
apply.
Protons and Neutrons are located in the nucleus.
Electrons are arranged in energy levels/orbitals.
1st Energy level/Orbital = ___________________
2nd Energy Level/Orbital = __________________
3rd Energy Level/Orbital = ______________________
16. There are 3 major groups on the periodic table
1. METALS ___________________________________________
___________________________________________
___________________________________________
___________________________________________
2. NON-METALS ___________________________________________
___________________________________________
___________________________________________
___________________________________________
3 METALLOIDS –
___________________________________________
___________________________________________
___________________________________________
___________________________________________
17. Dmitri Mendeleev – Russian Inventor and
Chemist developed the first ____________________
of Elements (although other scientists made
contributions).
18. Write down 5 things about the element OXYGEN.
Make sure you use characteristics from the Periodic
Table.
1._________________________________________
2._________________________________________
3. ________________________________________
4. ________________________________________
5. ________________________________________