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Matter & Its Properties

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by

Casey Lambert

on 13 October 2016

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Transcript of Matter & Its Properties

Matter has properties
These properties allow matter to be classified & identified.
A substance is a single kind of matter that has distinct (specific) physical & chemical properties.
Physical Properties
Observed without changing the substance into something else
Ex: color, taste, hardness, texture, odor/smell, boiling point, freezing point, melting point
Law of Conservation of Matter:
Matter can not be created or destroyed. It can only be changed physically or chemically.

Matter & Its Properties
Chemical Properties
Observed only when a substance reacts with another substance
Ex: Burning, flammability, rusting, tarnishing, explosiveness
Chemical Change
Change that produces a NEW substance with properties that are different from the original substance
EX: milk spoiling, wood burning, baking a cake
Physical Change
A change that alters the form, shape, or appearance of a substance, but NOT the substance itself.
EX: Tearing paper, chopping wood, phase change, mixing salt in water, frying an egg

Matter can change
This also applies to the mass of matter (Law of Conservation of Mass)
3 Types of Matter
Substances can be classified by the arrangement of the atoms that make them up.
This is NOT the same as different PHASES or STATES of matter.
Compounds
Substance made of 2 OR MORE ELEMENTS (not just atoms) chemically combined in a set amount (ratio)
EX: Water always has 2 Hydrogen and 1 Oxygen, Carbon Dioxide always has 1 Carbon and 2 Oxygen, Sugar always has 6 Carbon, 12 Hydrogen, and 6 Oxygen)
Have different properties from the individual elements that make them up (can you say chemical change?)
Mixtures
Made of 2 or more substances (elements or compounds) that are NOT chemically bonded or always in a set ratio
Substances in a mixture maintain their individual properties.
There are 2 types
Elements
Substances that CAN NOT be broken down into any other substance
Can be identified by specific physical & chemical properties
Made of only 1 type of atom
Organized on the Periodic Table of Elements
Heterogeneous Mixtures (hetero = different)
You can easily see the different substances in the mixture
EX: Trail Mix, cereal, potting soil, salad
Homogeneous Mixtures (homo = same)
The mixture looks mostly the same throughout. it is hard to tell the difference between the different substances.
EX: Solutions, Salad dressing, milk, lemonade, mud
But what are atoms made of?
Atoms are made of subatomic (smaller than atom) particles
Atoms are made of protons, neutrons, and electrons
But really, matter is made of atoms. And matter is anything with mass and volume. So... atoms make up everything.
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