1. What is Matter? Turn and Talk
Take a few moments to turn to a neighbor to discuss and complete the
Everything Matters to Us worksheet

2. Matter Matter Video
Basic definition of matter.

3. Lesson Goals and Objectives For the next two days:
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.

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

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

7. Online Demonstration Game
Three State of Matter
Solid
Liquid
Online Demonstration Game
Gas

8. SOLIDS

9. 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.

10. Liquids

11. 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 (example: It is more “fluid”.)
Example: Pour juice into a glass. The juice will take on the shape of the glass.

12. GAS

13. 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.

14. All matter is made up of atoms
All matter is made up of atoms. Imagine that we (the classroom) are a liquid. We can move around fairly easy.

15. If I were to remove half of the students here we would become a gas
If I were to remove half of the students here we would become a gas. We can move extremely easy.

16. Since we would not be able to move as freely.
If I were to add 65 more students to this room we would become a _______?
Since we would not be able to move as freely.
States of Matter

17. What kind of changes does matter undergo?
All matter, regardless of state, undergoes physical and chemical changes. These changes can be microscopic or macroscopic.

18. 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 (it has the same melting point, boiling point, chemical composition, etc.)
Definition of physical changes.

19. 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

20. Physical Change
Freezing water is a physical change because it’s still water if it’s frozen or liquid (it’s the same junk!!)

21. PHYSICAL CHANGES

22. 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).
Definition of chemical change.

23. Characteristics of Chemical Changes
Baking soda reacting w/ vinegar
You can’t go back to the original substances after a chemical change (reaction) has occurred!!
Chemical Changes are characterized by the following:
Burning wood

24. Chemical changes in matter
New Matter is formed.
Burning
Rusting
Cooking

25. CHEMICAL CHANGES

26. Is this a solid, a liquid, or a gas
Is this a solid, a liquid, or a gas? Can you find more than one type of matter in any of the pictures?

27. Is this a physical change or a chemical change
Is this a physical change or a chemical change? Can you find more than one physical or chemical change in the pictures?

28. Conservation of Matter
Chemical changes don’t 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

29. 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.

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