CHANGES IN MATTER

Grade 3

SY 2013-2014

By: Shirley Puaso- Valera

KEY QUESTIONS How does matter become beneficial to our everyday life?

Why it is important to understand the properties and the different types of matter?

How can matter change?

OBJECTIVESAnalyze how matter changes physically and chemically.

Demonstrate ways on how matter undergoes changes in their properties.

Observe the changes that took place in the ice cubes.

THINK-PAIR-SHAREA. Work in pair (or group) and do the

following activities.

- tear a piece of paper

- mold clay into different shapes

- fold a handkerchief into two

B. Observe on the materials while doing the activity. Ask them the changes that took place to the materials.

DISCUSSION

PHYSICAL CHANGES

PHYSICAL CHANGES IN MATTERA Physical change is a change in how matter

looks, but not the kind of matter is it is. Tear - Cut

Folded

Mixture - plates broken into pieces

Solution

DIFFERENT EXAMPLES OF PHYSICAL CHANGE

1. Ice becomes liquid when they are heated. This process of changing solid to liquid is called melting

Sublimation – is the process of changing solid matter to gas without passing the liquid state.

DIFFERENT EXAMPLES OF PHYSICAL CHANGE

2.Mothballs – undergo the process of sublimation once they are exposed to air.

Sublimation – is the process of changing solid matter to gas without passing the liquid state.

DIFFERENT EXAMPLES OF PHYSICAL CHANGE

3.When water is placed inside a freezer, it becomes ice. This process is called freezing.

Some liquids, like oil and melted butter become hard and turn to solid when cooled.

Freezing and cooling can change liquid to solid.Freezing is a change from liquid to solid at a constant temperature.

DIFFERENT EXAMPLES OF PHYSICAL CHANGE

4. When you boil water, you will observe water vapor or steam coming out of the container.

Water vapor or steam is the gaseous phase of water. When we turns into water vapor, the water evaporates. Evaporation is the process of changing liquid to gas at a constant temperature or just below its boiling point.

DIFFERENT EXAMPLES OF PHYSICAL CHANGE

5. When you put some cold water in a drinking glass, droplets of water are formed outside of the glass.

When vapor in the air touches a surface, it turns into liquid. This process of changing gas to liquid is called condensation.

1. RUSTING OF IRON

LET’S WATCH A VIDEO CLIP ABOUT MATTER!Physical and chemical changes

Click to go to the next slide.

INFER WHAT HAPPENS TO THE NAIL

LET’S WATCH A VIDEO CLIP ABOUTRusting iron

Click to go to the next slide.

2. MILK

2. SOURING MILK

INFER WHAT HAPPEN TO THE MILK

3. RIPENING OF FRUITS

INFER WHAT HAPPEN TO THE FRUITS

CHEMICAL CHANGES

CHEMICAL CHANGES IN MATTER

New Matter is formed.

Burning Rusting Cooking

OTHER EXAMPLES OF CHEMICAL CHANGES1.

DECOMPOSITION IS ANOTHER KIND OF CHEMICAL CHANGE

GENERALIZATIONMatter can change from one form to another.

Physical change is a change in size, form, or appearance with no material or substance formed.

Chemical change is any change in the properties of matter and results in the formation of a new substance

VALUING

EVALUATION

PP. 219-220

TH

IS THIS A PHYSICAL CHANGE OR A CHEMICAL CHANGE? CAN YOU FIND MORE THAN ONE PHYSICAL OR CHEMICAL CHANGE IN THE PICTURES?

IS THIS A SOLID, A LIQUID, OR A GAS?CAN YOU FIND MORE THAN ONE TYPE OF MATTER IN ANY OF THE PICTURES?