How water dissolves

Ceymone Pride, Mikey James, Malcolm Jackson, Cartier Greene

Background Info...

  • 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

Experimental Planning...

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!...

  1. At 170 degrees Fahrenheit the salt took approximately 1 min. to dissolve in clear water.
  2. At 74 degrees Fahrenheit , in colder water, salt took approximately 2 minutes to dissolve.
  3. While taking place both reactions turned the water to a more greyer color

than before.

Big image

Experimental Conclusion...

~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.

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