STEM+Abstract+HUAM

Builders wonder what substances make a nail rust faster. This experiment tests whether bleach, water, salt water, or soda will make a nail rust faster. These substances were put into 4 separate cups and dropped nails into them. These independent variables were left for 12 days outside in the shade in Florida and the dependent variable is the temperature and humidity. The experiment resulted in that the bleach had rusted the nail by a lot more than the water soda and salt water. The soda was a close second and had rusted the nail very little. Water and salt water were tied for showing very little rust. The experiment supported my hypothesis that bleach would rust a nail faster. The experiment concluded that bleach would rust a nail much quicker than water salt water and soda.

Question Does a nail rust faster in the shade of Florida in water, salt water, bleach or soda.

Hypothosis My hypothesis is that bleach will rust a nail faster.

Material 4 nails Coke Clorox bleach tap water salt water

step one: Get four cups and nails step 2: get bleach tap water, salt water, Coke. step 3: pour each into a different cup Step 4: place one nail in each cup

BAckroun information


 * Rust a reddish or yellowish-brown flaky coating of iron oxide that is formed on iron or steel by oxidation, especially in the presence of moisture
 * For my project i will be figuring out what makes a nail rust faster: water, salt water, bleach, and a can of sofa.

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 * Sodium Sodium Rust Iron Sodium hydroblsultlte this reaction is known to reduce the rust to a lower iron oxide

independent variable:
 * 14 day experiment
 * In the shade in Florida


 * || Nail 1(coke) || Nail 2 (Clorox Bleach) || Nail 3(tap water) || Nail 4 (salt water) ||
 * Day 1-5 || no change || slight change || no change || no change ||
 * Day 5-10 || slight change || change || slight change || slight change ||
 * Day 10-14 || big change || huge change || change || change ||