Presentation on theme: "Science Fair Project Salt & water Chemistry Frances Hansen and Maribel Cerda."— Presentation transcript:
Science Fair Project Salt & water Chemistry Frances Hansen and Maribel Cerda
Statement of the Problem How does salt affect the temperature of cold water?
Project Overview We put 1/8 teaspoon of salt into six cups of cold water and left 6 cups of cold water without salt.
Research Easy Took time A lot of planning Took effort
Variables Independent variable: Our independent variable would be the salt Dependent variable: Our dependent variable would be the temperature of water. Constant variables: Our constant variables are the types of cups we use, the type of thermometer, and the brand of salt we use. Control group: Our control group is the cup of water without salt We selected this our control group because it will help us identify the differences in the temperatures.
Hypothesis If 1 gram of salt is put into a cup of cold water, then the temperature of water will become colder because of all the substances salt contains. Our hypothesis is a trend because it will make anonymous results
Materials 12 cups A cup of salt Liter of water Thermometer Measuring cups
Procedure Layout supplies Label each cups (s for salt on 6 cups and ns for no salt on the other 6 cups) Fill each cup with ½ cups of water Put 1/8 teaspoon of salt into the cups labeled s Place the thermometer in the water Read the temperature Tell whether the temperatures changed Record the data on the chart Repeat steps 4-8 with the remaining cups