A neutron walks into a shop and says, “I’d like a coke."
The shopkeeper serves up the coke.
"How much will that be?" asks the neutron.
The shopkeeper replies, "For you? No charge."
Chapter 1 Secs. 1-3
All matter is
made up of
atoms
Elements Make Up
the Periodic Table
Atoms and the
Periodic Table
Reading the
Periodic Table
100
100
100
100
200
200
200
200
300
300
300
300
400
400
400
400
500
500
500
500
This particular element accounts
for about 90% of the total mass
of the universe.
Hydrogen
Who was the British scientist who
proposed the idea that each element is
made up of tiny particles called atoms?
John Dalton
Atoms are composed of three particles.
Name the three and describe each one’s
charge.
Proton-positively charged particle
Neutron- uncharged particle
Electron- negatively charged particle
What type of charge does the nucleus
of an atom contain?
Positive—why??
What specific type of metals fall
under group 2?
Alkaline Earth Metal
This is a one or two letter code that
is used to depict the name of the
element.
Chemical
Symbol
True or False. The modern periodic
table is organized by only it’s
category (metal, nonmetal,
metalloid).
False. It is organized by
atomic number and by
the properties of the
elements.
How can you determine the # of neutrons in
an element’s atoms?
Atomic Mass - Atomic Number
(# of protons/neutrons - # of protons)
______ are atoms of the same
element that have a different number
of neutrons.
Isotopes
When an atom gains one or more
electrons we call it a ________
______.
Negative Ion
What part of the periodic table
tells you the state of matter at
room temperature?
Chemical Symbol Color
What are the three basic categories
on the periodic table and how are
they identified?
Metals, Non metals,
and Metalloids.
Color of the box.
How many electrons does a neutral
Radon atom have? (Use your textbook)
86—how did you know this??
“Neutral” means it ha no charge, so
if you found the # of protons (atomic
number) you know the # of
electrons.
The atomic mass represents the number of
protons in an atom’s nucleus.
FALSE; Atomic number
The elements in group 1 are known
as...
Alkali Metals
What is the atomic mass of the
element found at Group 10, Period
4? (use textbook)
58.69- Nickel
The elements found in groups 3-12
are known as _________
_________.
Transition Metal
What is the atomic number of the element
that is a liquid at room temperature and can
be found in the Halogen group?
35; Bromine – Br
Halogen is group 17
What is the chemical symbol of
the only element that is a metal,
but is a liquid at room
temperature?
Hg- Mercury
How many neutrons does an
average atom of Hassium contain?
(# of protons: 108)
161 Neutrons
Atomic Mass - Atomic Number
269-108 = 161 Neutrons