Can you guys help here.. Let’s Create

Direction: Read and analyze the simple experiment presented below.

Reyn, Grade 7 student, wants to know why window grills and bridges are often

coated with paints. She knew for a fact that these things are made of a hard metal known

as steel. She then asked a question, what if these bridges and grills will not be coated with

paints? What will happen to them? With her knowledge about scientific method, she decided

to perform a simple experiment using steel wool and other materials that are found at home.

Then, she prepared the following set-ups and placed them in their kitchen for 4 days.

SET UP A

Steel wool

only

SET UP B

Steel wool

2 tbsp vinegar

SET UP C

Steel wool

2 tbsp soy

sauce

SET UP D

Steel wool

2 tbsp water

On the 4th day of his experiment, she noticed that rusts develop in each set-up. She

noted the following observations: The steel wool in Set-up A developed small amount of rust,

Set-up B on the other hand showed a steel wool covered heavily with rust, while Set-up C showed significant amount of rust on the steel wool and Set-up C also grew small amount of

rust on the material.

It is now your time to help Reyn finish her experiment by filling out the Scientific

Method Outline provided below. Write your answer on a separate answer sheet. Your output

will be graded using the rubric on the next page.

Title: _

I. Problem: _

II. Hypotheses:

_

_

III. Materials

IV. Procedures

V. Results

D. Set-up (Drawing)

E. Observation/Table

F. Interpretation

VI. Conclusion: (Answer why grills and bridges have to be coated with paints)

_​