CHEMICAL REACTION

By

Yusuf Kirana R.

7-A

Foreword

Thanks to God, because of Him, I can do this task, and thanks to Mr. Setiawan that support and believes, I can do this task. This task is about “Chemical Reaction”

Writer,

Yusuf Kirana R.

Basic Competence

To identify simple chemical reaction using simple experiment

Indicators

We are able to:

• Make a reaction two matters to indicate color change and or temperature.

• Conclude the characteristics of chemical reaction base on color change and or temperature.

Key Word

1. Chemical Reaction

Definition

• A chemical reaction is a process that always results in the introversions of chemical substances

The Experiment

Purpose

To know how the chemical reaction at flour solution, iodine and vitamin c if the all materials put into glass together

Material and tools

Glass Water Flour Spoon

Iodine Vitamin C

Procedures

• Prepare the Materials and Tools

• Pour the water into the glass

• Pour the flour into the glass of water

• Drops the iodine into flour solution

• Stir and wait until the color is change

• After the color is change, put the vitamin C

• Next, what happen?

The Result

Color Change

Matter Explanation

Clean become white

Water and Flour

Because flour solution is Heterogeneous mixture

White become purple

Flour solution and iodine

Because flour is has carbohydrate

Yellow become clean

Vitamin c and iodine

Because vitamin c has no carbohydrate

Conclusion

We can know that, iodine can make chemical reaction. And we know that flour is made of carbohydrate.