Question

Testing the conductivity of a salt Solution aim apparatus procedures observation conclusion

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Answer 1

Answer:

aim: To test the conductivity of salt water

apparatus: 2 popsicle sticks

aluminum foil

table salt

9-volt battery

buzzer

2 cups of water

tape

procedure: 1.) Add salt to one of the cups of water, you don’t. need a lot, 3 spoons will do. Mix well

2).Wrap the popsicle sticks in foil.

3.)Tape the red wire lead of the buzzer to the positive (+) end of the battery.

4.)Next, Tape the black wire lead of the buzzer to one of the popsicle sticks.

5.)Finally, Tape the other popsicle stick to the negative (-) end of the battery.

6) Touch the ends of the popsicle sticks together

7) You should hear the buzzer go off. If you can’t hear it, review steps 3 to 5 and make sure everything is correct.

8) Now dip the ends of the popsicle sticks in the salt water, make sure the ends are not touching each other. You should hear the buzzer go off, this is because the sodium and chlorine ions are carrying electricity as they float freely in the salt water.

observations : we can see that salt water is conductive

conclusion : Since there are no sodium and chlorine ions floating around in fresh water, the buzzer will not go off unless you touch the ends of the popsicle sticks together (which will complete the circuit). The water only becomes conducive after adding salt.