Matter

What is Matter?

Matter is anything that has mass and occupies space.

(Mass=measure of the amount of matter in an object)

Everything you can touch or hold is matter.

Look around the room and give examples of Matter.

Examples: you, books, air, paper… anything really

States of Matter

Solids

Definition: Atoms are tightly packed together.

Gas

Definition: Atoms not touching each other, but rather floating around

Liquid

Definition: Not tightly packed together allowing movement

Plasma

Drag picture to placeholder or click icon to add

Drag picture to placeholder or click icon to add

Properties of Matter

Physical Properties –Describes Matter

Physical Properties examples:

Color Texture

Odor Size

Shape Melting point

Boiling point Density

Malleability

Chemical Properties –Describes how a substance reacts

Chemical Properties examples:

flammability

Toxicity

Combustion

Oxidation

Matter

There are two types of Matter:

1. Pure substancesElementsCompounds

2. MixturesHomogeneous (Same all the

way throughout) Heterogeneous (Different

throughout)

Matter is everything that has Mass and takes up space.

A

Pure Substances: Cannot

Be broken down into simpler compounds

and still maintain the same properties

Mixtures: Made of two or more substances and can easily be

separated

All pure substances are homogeneous

Elements Compound

s

Examples: SilverGold Oxygen Hydrogen Carbon

Examples: SaltCarbon DioxideWaterMgBr2

Homogeneous (Same

Throughout)

Heterogeneous

(Different Throughout)

Examples: Kool-AidCoffeeSalt WaterAirHershey Bar

Examples: Hershey Bar (withAlmonds)PizzaVegatable soupSalad

Classify the following examples as heterogeneous or homogeneous:

Hershey Bar

Snickers Bar

Pizza

Italian Dressing

Hot Chocolate

Mini Lab: Homogeneous vs. Heterogeneous

Kool Aid Trail Mix

TAKE A BREAK!

Lab # 1

Element, Compound, or Mixture?

Changes of Matter

There are two types of changes that can occur.

Physical Change

Chemical Change

Physical Change vs.

Chemical Change

Chemical Change: A change that occurs to produce new substances (cannot be reversed)

Physical Change: A change that does not produce a new substance (can be reversed)

Color Change Tearing

Production of heat/light Cutting

Formation of precipitation Folding

Formation of Gas Painting

Example: Rust Melting

Example: Baking Freezing

Example: Food Digestion Boiling

Example Rotting Dissolving

Example: Leaves changing color

Example: Ice Cubes melting

Classify the following as a physical or chemical

change1. Tearing Paper

2. Boiling Water

3. Making Kool-aid

4. Teeth Rotting

Questions

Pg. 58 1-7

Matter Changes by Adding or Removing Energy (aka Heat)

A. Solid

B. Solid/Liquid

Freezing

Melting

C.Liquid

Condensing

Vapor

D. Liquid/Gas E.Gas

Heat Added

T(C)

Lab: Physical vs. Chemical

Density

A measurement of how much matter is in a certain volume of a substance

Low density= “light”

High density = “Heavy”

Determines if an object will sink or float

Density = mass /volume

Practice Problem #1(density= mass/volume)

Substance Density

Air 0.00313

Wood (Oak) 0.85

Water 1.00

Ice 0.93

Aluminum 2.7

Lead 11.3

Gold 19.3

Ethanol 0.94

Methanol 0.79

List the items which will float on the particular sample of ice from the previous sample.

Calculating Density Density Mass Volume

Density Lab

Law of Conservation of Mass

Mass can never be created or destroyed

Law of Conservation of Mass- States that matter can be changed from one form into another, but the total amount of mass remains constant.

Law of Conservation of Mass