1. Matter and its Properties
Chapter 1: Section 1.2
Dr. C.’s Pre-AP Chemistry
Lake Dallas High School
Fall 2015

2. Today’s Objectives (September 3rd (A-Day) September 4th (B-Day)
Define: Volume, Mass, Atom, Element, and Compound
Define and Identify: Physical vs Chemical Change
Identify Extensive and Intensive properties
Compare the structure of solids, liquids, and gases
Classify matter as a mixture or a pure substance

3. What is Volume?
Volume is the amount of three dimensional space an object occupies

4. Mass is the amount of matter present
What is Mass?
Mass is the amount of matter present

5. Atoms, Elements, Compounds
Atom is the smallest building block of an element. It maintains the chemical identify of that element.
An Element is made of one type of atom and cannot be broken down into simpler substances
A Compound is made from atoms of 2 or more elements and can be broken down into simpler substances.

6. Yay Legos!

7. Tylenol is a Compound

8. Extensive vs. Intensive Properties
Extensive Properties depend on the amount of matter present.
Volume
Mass
Amount of energy in a substance

9. Extensive vs. Intensive Properties
Intensive Properties do not depend on the amount of matter present.
Density
Melting Point
Boiling Point
Ability to conduct electricity

10. Physical Properties and Changes
A Physical Property can be observed without changing the identity of the substance.
Boiling Point or Melting Point
A Physical Change is a change of a substance that does not change the identity of the substance.
Grinding, Cutting, Melting and Boiling

11. Physical Change

12. A can is still a can
Yay a demo!

13. A Change of State is a physical change from one state to another.

14. Solids, Liquids and Gases
Solids – Definite Shape and Definite Volume
Liquids – Indefinite Shape and Definite Volume
Gas – Indefinite Shape and Indefinite Volume
But what the heck is a plasma?

15. Plasma

16. Chemical Property and Change
A Chemical Property is the ability of a substance to undergo changes that transform it into a different substance.
This change is called a chemical change or more commonly a chemical reaction.

17. A Chemical Reaction Takes Place
w00t another demo!

18. Reactants And Products
In chemistry chemical reactions are written in the form:
Reactants  Products
Reactants are the substances that change
Products are the substances that are formed

19. Evidence of a Chemical Reaction

20. Law of Conservation of Energy
Energy can be released or absorbed, it is never created or destroyed.
Heat
Light

21. Mixtures Vs. Pure Substances
Mixtures are a blend of two or more kinds of matter that retain their individual properties.
Often mixed together physically
Can usually be separated
Pure Substances have a fixed composition
Each Sample always has the same properties
Water is always H2O but Sand, Pepper, Salt mixture can differ in each beaker.

22. Classification of Matter
Visibly Distinguishable Parts?

23. Do we have time for a game?
Let’s check the clock!

24. Today’s Objectives (September 3rd (A-Day) September 4th (B-Day)
Define: Volume, Mass, Atom, Element, and Compound
Define and Identify: Physical vs Chemical Change
Identify Extensive and Intensive properties
Compare the structure of solids, liquids, and gases
Classify matter as a mixture or a pure substance