How water dissolves
Ceymone Pride, Mikey James, Malcolm Jackson, Cartier Greene
- The polarity of water molecules causes water to dissolve many ionically bonded substances
- Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions while negative water parts attract to positive sodium ions
Hypothesis? Salt in hot water will dissolve quicker than salt in cold water
Variables? Constants? Changing variables are water temperatures; water and salt are constants in the experiment
Materials? Salt, cups, water(cold and hot), timer, thermometer: to determine the temperature of water
Procedures? Put the same amount of salt in different temperatures of water to see which one dissolves quicker, while recording the time and temperature of each
How will you organize your data? By first experimenting then collecting information to put in a smore presentation
Questions? How do the reactions take place
Salt and water results!...
- At 170 degrees Fahrenheit the salt took approximately 1 min. to dissolve in clear water.
- At 74 degrees Fahrenheit , in colder water, salt took approximately 2 minutes to dissolve.
- While taking place both reactions turned the water to a more greyer color
~We concluded that the reactions took place the way they did, based on the water temperatures. The salt in warmer water dissolved quicker because of the hot temperature, kind of like how anything reacts in hot water, fast! It didn't dissolve as quickly in cold water, because the salt had little to nothing to react off of, causing the process to happen much longer than the other.
~Based on the experiment we conducted it turned out that our Hypothesis came out to be true.