What’s the Matter? Matter “Stuff” that Everything Made of is made of! Atoms Matter Has Volume= Takes Up Space Has Mass= The Amount of Matter in an Object

Don’t Sweat the Small Stuff!

What is the “Small Stuff” anyway? Atoms Elements Molecules Compounds

Atoms Basic unit of matter The smallest particle of a substance that has all of the properties of that substance. Example= the element Gold is made of gold atoms

Elements A pure substance made of only one kind of atom. Examples= Gold, Hydrogen, Carbon, etc. Elements are found on the Periodic Table of Elements. Here is a song about them… http://www.privatehand.com/flash/elements.html

Molecules Made up of two or more atoms joined tightly together. Small particle of the entire substance or compound Atoms in a molecule may be of the same element or of different elements. Examples= 1 molecule of the element oxygen or 1 molecule of water H2O

Compounds A substance whose molecules contain atoms of different elements combined chemically. Most matter exists as compounds. Examples= Water, Carbon Dioxide, etc.

What is the difference between a Compound and a Molecule? A molecule is formed when two or more atoms join together chemically. A compound is a molecule that contains at least two different elements.

Compound vs. Molecule All compounds are molecules but not all molecules are compounds! Compound = entire substance Molecule = small particle of entire substance

Smallest part of a substance Atom Smallest part of a substance Has all of the properties of that substance Compound Molecules containing atoms of different elements Element Pure Substance Made of 1 kind of atom Molecule 2 or more atoms joined tightly together Smallest part of compound

Atom Smallest part of a substance Has all of the properties of that substance

Element Pure Substance Made of 1 kind of atom

Molecule 2 or more atoms joined tightly together Smallest part of compound

Compound Molecules containing atoms of different elements

Size of Atoms Tiny! Tinier than the cells and germs. Too small to be seen with ordinary microscopes Atoms are so small that it would take 100 million atoms placed side by side to form a row only 1 cm long which is about the width of your pinky finger!

How Small is the Small Stuff? Let’s check it out… http://www.micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10 http://www.cellsalive.com/howbig.htm http://www.strangematterexhibit.com/structure.html