1. Chapter 1- Lesson 5: How does matter change?
Objective:
you will observe and compare physical and chemical changes and will analyze how these changes are affected by temperature.

2. Chapter 1- Lesson 5: How does matter change?
Envision it page 34:
Picking
Peeling
Separating
St. Patrick’s day: a cultural and religious celebration held on March 17, the death day of St. Patrick.
The color associated with Catholics in Ireland. St. Patrick used the shamrock, the three-leaved plant, to explain the Holy Trinity .

3. Chapter 1- Lesson 5: How does matter change?
Explore it page 34: what happens when air heats up?
Explain your results:
3. Only the balloon on the bottle in warm water got bigger
4. Warm water: heated air expanded into the balloon. Room temperature: there was no effect.
5. It was a physical change; the air simply expanded, no change occurred to its components that made it.
St. Patrick’s day: a cultural and religious celebration held on March 17, the death day of St. Patrick.
The color associated with Catholics in Ireland. St. Patrick used the shamrock, the three-leaved plant, to explain the Holy Trinity .

4. Chapter 1- Lesson 5: How does matter change?
Physical change:
A change in some properties of matter without forming a different kind of matter.
Examples:
Cutting a piece of paper: Some properties changed like size and shape. However, other properties did not change like color and texture. You end up with paper.
Breaking glass
Stretching a rubber band or slime.
St. Patrick’s day: a cultural and religious celebration held on March 17, the death day of St. Patrick.
The color associated with Catholics in Ireland. St. Patrick used the shamrock, the three-leaved plant, to explain the Holy Trinity .

5. Chapter 1- Lesson 5: How does matter change?
Physical change:
Compare and contrast page 35
Both pieces of paper have the same texture and color.
The small piece has less mass and volume than the large piece.
St. Patrick’s day: a cultural and religious celebration held on March 17, the death day of St. Patrick.
The color associated with Catholics in Ireland. St. Patrick used the shamrock, the three-leaved plant, to explain the Holy Trinity .

6. Chapter 1- Lesson 5: How does matter change?
Temperature and physical change:
Physical changes may happen more or less easily depending on the temperature.
What is much easier to spread cold or warm butter?
Warm butter.
Can ice melt at 0°C?
No, the temperature should be higher than the melting point.
St. Patrick’s day: a cultural and religious celebration held on March 17, the death day of St. Patrick.
The color associated with Catholics in Ireland. St. Patrick used the shamrock, the three-leaved plant, to explain the Holy Trinity .

7. Chapter 1- Lesson 5: How does matter change?
Temperature and physical change:
Changes of States of matter
Condensation
Freezing
Melting
Evaporation
Matter can change from one state to another via different processes
Physical changes

8. Temperature and physical change:
Chapter 1- Lesson 5: How does matter change?
Temperature and physical change:
wax liquid wax
The total weight of wax stays the same.
water water vapor
The amount of water stays the same
Melting
Freezing
Evaporation
Condensation

9. Chapter 1- Lesson 5: How does matter change?
Temperature and physical change:
2. Infer page 36
The oil is evaporating. The candle raises the temperature so that the oil evaporates faster.
At home lab: Twin Balloons.

10. Chapter 1- Lesson 5: How does matter change?
Temperature and physical change:
Is melting chocolate is a physical change? Why?
Yes, it is a physical change because it only changes states.
A friend claiming that stirring chocolate powder into milk is a physical change, is your friend correct? Explain!
Yes, the chocolate powder and milk mix, but they do not change into a different kind of matter.

11. Chapter 1- Lesson 5: How does matter change?
Chemical change:
A change in matter to form a new substance with different properties.
Atoms arrange themselves differently to from new kinds of matter.
How can we tell that chemical changes have occurred?
You may observe the followings:
Release heat/ light
A change in color
A new smell
Formation of bubbles/ solid substance.
St. Patrick’s day: a cultural and religious celebration held on March 17, the death day of St. Patrick.
The color associated with Catholics in Ireland. St. Patrick used the shamrock, the three-leaved plant, to explain the Holy Trinity .

12. 3.Compare and contrast page 37: Both change the properties of matter
Chapter 1- Lesson 5: How does matter change?
Chemical change:
3.Compare and contrast page 37:
Both change the properties of matter
Physical Change
Chemical Change
Physical properties may/may not change
Physical properties do change
Does not produce new substance
Produces new substance
The change is reversible
The change is not reversible
St. Patrick’s day: a cultural and religious celebration held on March 17, the death day of St. Patrick.
The color associated with Catholics in Ireland. St. Patrick used the shamrock, the three-leaved plant, to explain the Holy Trinity .

13. Chapter 1- Lesson 5: How does matter change?
Chemical change:
3.Describe page 37:
Physical Changes
Chemical Changes
Rolling paper
Photosynthesis
Rusting metal
Photosynthesis: PLANTS take water+CO2+SUNlighT TO PRODUCE food AND O2
Rust (iron Oxide Fe2O3) forms as a result of the reaction between iron and O2 in the presence of air or moisture.

14. Chapter 1- Lesson 5: How does matter change?
Temperature and chemical change:
Name 2 examples of chemical changes?
Pancakes cooking,
fuel burning
Fuel burning: CH4+O2=energy in the form of heat/light+ CO2+H2O
Eggs: work as binder, help to keep the cake together.
Baking soda: helps to produce CO2, which produce bubbles (pockets of air) to make the cake raise and become fluffy, being light, soft and airy
Oil: helps to make it moist not dry

15. Chapter 1- Lesson 5: How does matter change?
Temperature and chemical change:
Many chemical reactions can happen without heat/ high temperature.
Using higher temperature helps to increase the speed of the reaction.
Example:
Burning a candle Light + heat
Lightning lab page 38
Chemical reaction

16. Chapter 1- Lesson 5: How does matter change?
Temperature and chemical change:
5. Conclude page 38
The temperature is probably high, because the reaction is happening faster.
6. Challenge
It does not disappear. Its atoms are arranged to from new substances.
7. The tomato on the left is taken longer to ripen, so it might have been in the refrigerator.
8. Infer
the medicine in the bottle may change faster if heated.
Ripen: developed to the point of redness for eating.

17. Chapter 1- Lesson 5: How does matter change?

18. Chapter 1- Lesson 5: How does matter change?

19. Chapter 1- Lesson 5: How does matter change?
Is water cycle a physical or chemical change?
A physical change

20. Chapter 1- Lesson 5: How does matter change?
Got it:
9. Chemical changes happen more easily or less easily depending on the temperature.
10. color, smell, state of matter.

21. Chapter 1- Lesson 5: How does matter change?

22. Chapter 1- Lesson 5: How does matter change?

23. Chapter 1- Lesson 5: How does matter change?
Rust
chemical change
physical change
True, when matter changes state, some of its properties change, but it is still the same substance.
False, molecules move faster when the temperature rises. So the reaction may happen faster.
Clues that indicate the occurrence of a chemical change are:
the release of heat/light,
a change in color,
a new smell,
gas bubbles,
the formation of solids

24. Chapter 1 Review
Atoms are too small to be seen using a magnifying glass. C D
The amount of space the object takes up.
Both are made of same matter/ elements. Water is a liquid and ice is a solid.
Liquids and solids both have definite volume. Liquid and gases both do not have a definite shape.
No, because in a mixture, Sulfur would still burn and Iron would be attracted to a magnet. B
Folding, cutting, tearing, and water cycle.
Steel is hard and strong. It can be used for engine parts. Leather is soft and durable. It is good for making seats. Paint has different colors. It is used to make the car attractive.

25. Chapter 1 Review
What is an atom?
What is a molecule?
What is an element?
What is a compound?
What is a mixture?
What is a solute?
What is a solvent?
Atoms join together to form a ………….
What is the atomic theory?
What is mass? How can you measure it? What is the unit of measurement?
What is temperature? How can you measure it? What is the unit of measurement?
What is volume? How can you measure it? What is the unit of measurement?
What is a solution?
What is solubility?
What can affect the rate of chemical reaction?