1. ATOMS ATOMS ARE THE BASIC BUILDING BLOCKS OF MATTER
ATOMS ARE OFTEN FOUND LINKED TOGETHER RATHER THAN BEING SEPARATE
LINKED ATOMS ARE CALLED MOLECULES

2. How Does Matter Change from One State to Another?
Lesson 2
How Does Matter Change from One State to Another?

3. Lesson 2
Three States of Matter

4. Lesson 2
SOLID

6. PROPERTIES OF A SOLID HAS DEFINITE SHAPE HAS DEFINITE VOLUME
FEELS FIRM
PARTICLES ARE PACKED TIGHTLY TOGETHER
LITTLE SPACE BETWEEN PARTICLES
PARTICLES MOVE EXTREMELY SLOW

7. Lesson 2
LIQUID

9. PROPERTIES OF A LIQUID PARTICLES NOT PACKED TOGETHER TIGHTLY
PARTICLES MOVE FREELY
PARTICLES WILL TAKE THE SHAPE OF THE CONTAINER
LIQUID EASILY CHANGES SHAPE

10. Lesson 2
GAS (VAPOR)

12. PROPERTIES OF A GAS (VAPOR)
PARTICLES ARE FARTHEST APART
PARTICLES MOVE VERY FAST
PARTICLES TAKE SHAPE OF ANY CONTAINER
DENSITY IS VERY LOW
HIGH PRESSURE WILL TURN GAS INTO LIQUID

13. CHANGES BETWEEN STATES
FREEZING
MELTING
BOILING
CONDENSING

14. FREEZING HEAT IS REMOVED FROM A LIQUID
PARTICLES SLOW DOWN AND MOVE CLOSER TOGETHER
PARTICLES BECOME TIGHTLY PACKED TO FORM A SOLID

16. MELTING
HEAT IS ADDED TO THE LIQUID
PARTICLES BEGIN TO MOVE FASTER

18. BOILING LOTS OF HEAT IS ADDED
HEAT GIVE THE PARTICLES ENOUGH ENERGY TO ESCAPE FROM LIQUID
PARTICLES MOVE VERY FAST

20. CONDENSING THE REMOVAL OF HEAT FROM GAS
PARTICLES SLOW DOWN AND MOVE CLOSER TOGETHER FROMING LIQUID

22. EVAPORATION
OCCURS WHEN PARTICLES ESCAPE FROM A NONBOILING LIQUID AND BECOME A GAS

23. CONDENSATION WATER VAPOR IN THE AIR IS COOLED
HEAT IS REMOVED FROM PARTICLES
PARTICLES SLOW DOWN

24. SUBLIMATION PARTICLES ESCAPE FROM THE SURFACE AND BECOME A GAS
SUBLIMATION IS A CHANGE IN STATE FROM A SOLID TO A GAS

25. ADDING HEAT AND TAKING HEAT AWAY CAUSES MATTER TO CHANGE STATES
ADDING HEAT MAKES THE PARTICLES IN MATTER MOVE FASTER
TAKING HEAT AWAY MAKES THE PARTICLES SLOW DOWN

26. FREEZING POINT
EVERY SUBSTANCE HAS ITS OWN TEMPERATURE AT WHICH IT CHANGES FROM A LIQUID TO A SOLID

27. BOILING POINT
THE TEMPERATURE AT WHICH A SUBSTANCE CHANGES FROM A LIQUID TO A GAS

28. MELTING POINT
THE TEMPERATURE AT WHICH A SUBSTANCE MELTS AND FREEZES IS THE SAME
THE MELTING POINT AND THE FREEZING POINT OF A SUBSTANCE ARE THE SAME

30. CHANGES IN MATTER
PHYSICAL
AND
CHEMICAL CHANGES

35. Chemical Changes in Matter
Q:What is chemical change?
A: Changes that form different kinds of matter.
EXAMPLES: in chemical changes the particles in the matter change.
Flour, eggs, milk, and oil make pancakes.