Matter is Everything! Matter Matters!
Types of Matter
Molecules are tightly compacted and vibrate
Molecules are attracted to each other and stay close
Molecules don't like each other, takes up tons of space
Classifications of Matter
Below is a diagram of the Classifications of Matter
Pure Substances are just one type of Atom, or one fixed combination of atoms. Pure substances have become one, and are chemically bonded. They can't be separated without a great deal of energy.
Gold is an example of a pure substance
Mixtures are two or more substances that are mixed together, and can not always tell that is it mixed together by looking at it. Mixtures are not chemical bonded together, and can be separated physically
Trail/Snack mix is a mixture
Chemical and Physical Properties
Physical properties are things you can identify with one of the five sences, You can see, touch taste, smell, hear physical things. Chemical properties are the atoms and elements things are made of. They are the ability to form new substances
Green Eyes are physical. They are the color of peoples eyes
This fuzz of this fabric is a physical property. The fuzz is a texture, which is something you can touch and feel.
The curls in someones hair is a texture and is a type of physical property.
Chemical Properties are the abilities things have to change.
This is the ability to burn. Candle wicks are flammable.
This is an unstable energy coming from a atom's nucleus.
Ability to Oxidize
This is how things rust. For example, the statue of liberty and pennies rust from copper to a green color.
There are many ways to tell if a chemical change has occurred. These include....
Sometimes odors will be produced as a result and hint that a chemical change has occurred.
Change in Temperture
Sudden changes in temperature can be caused by chemical reactions.
Change in Color
Fruit is an example of this. It changes color when it is ripe.
The bubbles that form is the creation of a gas. This can sometimes indicate a chemical change.
Formation of a Solid
If something new comes from an experiment, it is most likely a chemical change.
Food is science!
Chemical V.S. Physical Changes
If something is changed chemically, it can not be undone. You can't un-bake cookies. You can't un-ripen fruit. However, you could reweave ribbon together (it might be hard, but you could try!). You can refreeze the water to make new ice. Physical you can redo, and remake. That's quite a bit harder with chemical changes.