Matter. What is Matter? Matter is anything that has mass and occupies space. (Mass=measure of the...
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Transcript of Matter. What is Matter? Matter is anything that has mass and occupies space. (Mass=measure of the...
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
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
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
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)
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.
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.