Matter Matter Video

1
MatterMatter Video
2
Lesson Goals and Objectives

• You will learn about the three states of matter
• You will learn what physical changes are and how
  matter can change from one state to another.
• You will learn how chemical changes can cause
  some kinds of matter to become new matter.

3

• Matter
• Matter is everything around you. Matter is
  anything made of atoms and molecules. Matter is
  anything that has a mass.

4
Atom

• The smallest particle that can still be
  identified as the matter it came from is an atom

5
Three State of Matter

• Solid

Liquid
Liquid
Online Demonstration
Gas
6
SOLIDS
7
SOLID

• A solid is matter that has that has definite size
  and shape.
• Molecules are held close together and there is
  very little movement between them.
• Example Put a sneaker in a box. It stays the
  same.

8
Liquids
9
LIQUID

• A liquid takes the shape of any container.
• Atoms and molecules have more space between them
  than a solid does, but less than a gas (ie. It
  is more fluid.)
• Example Pour juice into a glass. The juice
  will take on the shape of the glass.

10
GAS
11
Gas

• Gas is matter that has no definite shape. Gases
  take the shape of whatever container they are in
  .
• Molecules are moving in random patterns with
  varying amounts of distance between the
  particles.
• Example The air all around us is a gas.

12
What kind of changes does matter undergo?
All matter, regardless of state, undergoes
physical and chemical changes. These changes can
be microscopic or macroscopic.
13
What is a physical change?

• A physical change occurs when the substance
  changes state but does not change its chemical
  composition.
• For example water freezing into ice, cutting a
  piece of wood into smaller pieces, etc.
• The form or appearance has changed, but the
  properties of that substance are the same (i.e.
  it has the same melting point, boiling point,
  chemical composition, etc.)

14
Physical Changes

• Breaking
• Crushing
• Cutting
• Bending
• Melting
• Freezing
• Boiling

• Can happen naturally
• People can cause changes
• Water evaporating
• Rain falling and causing puddles
• People cause change
• Recycling paper
• Recycling metal

15
Physical Change

• Freezing water is a physical change because its
  still water if its frozen or liquid (its the
  same junk!!)

16
PHYSICAL CHANGES
17
What are chemical changes?

• A chemical change occurs when a substance changes
  into something new.
• This occurs due to heating, chemical reaction,
  etc.
• You can tell a chemical change has occurred if
  the density, melting point or freezing point of
  the original substance changes. Many common
  signs of a chemical change can be seen (bubbles
  forming, mass changed, etc).

18

Characteristics of Chemical Changes
Baking soda reacting w/ vinegar

• You cant go back to the original substances
  after a chemical change (reaction) has occurred!!

Burning wood
19
Chemical changes in matter

• New Matter is formed.
• Burning
• Rusting
• Cooking

20
CHEMICAL CHANGES
21
Lets watch a video clip about matter!

• States of Matter

22
Is this a solid, a liquid, or a gas?Can you find
more than one type of matter in any of the
pictures?
23
Is this a physical change or a chemical change?
Can you find more than one physical or chemical
change in the pictures?
24
Conservation of Matter

• Chemical changes dont make new matter
• The total mass of the products that form equals
  the total mass of the substances that react.
• There is no observable change in the quantity of
  matter during a chemical reaction or a physical
  change.
• In other words, matter cannot be created nor
  destroyed. It is just converted from one form to
  another

25
Quick Review

• What is a physical change?
• A physical change is a change in the size,
  shape, state, or appearance of matter.
• What is a chemical change?
• A chemical change causes matter to become a
  new kind of matter.

26
physical
27

• chemical

28

• physical

29

• physical

30

• chemical

31

• physical