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# Introduction to Matter

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## amy alford

on 17 September 2015

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#### Transcript of Introduction to Matter

Build An Atom
Activites:
*Learn *Practice *Play
1. Go to Website
and select the "Symbol" icon.
Prior Knowledge
= the number of ________ in the nucleus of an atom
= the average number of ______ + ______
Summative Assessment:
*10 points per game to be "played" with instructor's supervision.

Everything in the Universe is either _____ or ______.
Matter is anything that ____________________.
All matter is made up of one or more _____ on the periodic table.
Atomic number
Atomic Mass
Let's Review
Introduction to Matter
Atomic Number
Symbol
Name
Mass
Number
Mass Number
Atomic Number
But be carefull!!!!!
Sometimes the
mass number
and atomic number aren't
where you'd
expect.
Matter or Energy
has mass and takes up space.
elements
An atom is the smallest unit of an element that still retains the properties of that element.
Atomic Mass
For example, Oxygen is an element within Oxygen gas that is present in the air. It is made up of subatomic particles called protons, neutrons, and electrons.
All atoms in every element are made of protons, neutrons and electrons.
electrons
protons
neutrons
But only oxygen atoms are made up of 8 protons
The number of protons that are characteristic of an element is called the atomic number. It is how the periodic table is organized.
The symbol is just an abbreviation of that element.
The mass of the atom is mostly in the nucleus. Adding the number of protons plus the number of neutrons gives you the atomic mass.
As you move across the periodic table from left to right, the next element always has one more proton or atomic number.
Protons
Protons + Neutrons
4. Fill in table on Build-An-Atom Worksheet as you work through the simulation. Then answer the questions.
as shown
here:
Net Charge
Always look for a key.
Atomic Mass
Atomic Number
Net Charge
Practice, practice, practice!!!
Formative
Assessment:
Notice the location of information.