Bellringer: What is an atom? Review Notes on Elements and Compounds Assignment: Frayer Model for Compound

Today’s Agenda…

What is an atom? What are atoms made up of? Where are the protons, neutrons, and

electrons located in the atom? What kind of electrical charge do protons,

neutrons, and electrons have? What is the law of conservation of mass? How is it related to atoms?

Review

Elements & Compounds

Study Pack #9

I can describe compounds.

Today’s Target…

An element is matter made up of only one

kind of atom All matter is made up of elements

Examples: oxygen and nitrogen are in the air we breath & metals like aluminum are used to make many products we use everyday like soda cans

What is an element?

A chart that organizes and displays all the elements Elements are represented on the table with symbols

One capital letter OR one capital and one lowercase letter

Example: O: Oxygen & Al: Aluminum What other information can be seen on the periodic

table? Atomic number Atomic mass Metal, nonmetal, metalloid Solid, liquid, gas

The Periodic Table

Made up of more than one kind of atom Made up of more than one kind of element Example: Water

H20 Made up of the elements hydrogen and oxygen

What are compounds?

When the atoms (elements) that make up a

compound come together a chemical change occurs

This means the elements cannot be separated from each other very easily

What are compounds?

Compounds are represented by formulas

which include letters and sometimes numbers These formulas tell us….

What elements are in the compound How many atoms of each element

Let’s try it! What is NaCl made up of? What is CO2 made up of?

What are compounds?

What is an element? What is a compound? How are they different?

Review

Finish the Frayer Model for “Compound”

Definition Characteristics Examples Nonexamples

Assignment