In the Sticky Tape lab we study the behavior of the charged particles and develop a more complex model of the atom that accounts for the fact that some particles have positive charge whereas others are negatively charged.
What do you observe if there is an interaction explain whether the tape pieces attract or repel each other?
If tape is attracted to an object, the tape and the object may have opposite charges, or the tape may be charged and the object uncharged, or the object may be charged and the tape uncharged. But if the tape is repelled by the object, the tape and the object must have the same charge.
What is true about the charges on each piece of tape since they both were prepared the same way?
Observe what happens. They attract. A top, T, tape and a bottom, B, tape attract.
Is tape positively or negatively charged?
Since the tape has extra electrons, it has a negative charge. When you move your finger close to the tape, electrons in your skin are repelled and move away. This makes the skin on your finger tip have a slight positive charge. Since positive and negative attract, the tape moves toward your finger.
What evidence allowed us to conclude that the top tape was positive?
In the foil, the attraction for the positive tape is more pronounced than in paper. We deduced this because negative electrons are allowed to move from atom to atom, positive collects on the edge of the foil closest to the positive tape.
How does the distance between the tapes affect the interaction between them explain the reasoning for your answer?
Does the strength of the interaction change with the distance between tapes? The ends of the tape repel each other. The closer the two pieces, the stronger the force of repulsion.
What happens when you bring the charged plastic strip near the paper pieces Why does this happen?
When the negatively charged ruler is brought near to the paper pieces, they are attracted to the ruler as the the electrons move around on the paper because of the large charge on the ruler. Electrons will move away from the ruler leaving a positive charge on the paper near the ruler, so they are attracted.
What can you conclude about the electric charges on the comb and tissue paper?
The paper is attracted to the comb. This happens because the charged comb induces an opposite charge in the paper and as opposite charges attract, the paper sticks to the comb.
Is tape a conductor or insulator?
Does Electrical Tape Conduct Electricity? Electrical tape acts as an insulator when used properly. This means that it protects people or components against electrical current moving through the cables. Therefore, suitably rated and installed insulation tape should NOT be a conductor for electricity.
Which pieces of tape are positively charged?
With the aid of research presented at the end of our lab, we determined the top tape (T tape) was positive and the bottom tape (B tape) was negative.
How could you find out which strip of tape B or T is positively charged?
Put the tape near the balloon. If it is attracted to the balloon, the tape is charged positively. If the balloon repels it, then they are both negative. With the T tape and B tape set up as we did in class, pull the T tape off and then the B tape off- both pieces of tape have the same charge and repel.
What interaction do you predict between a U tape and an L tape?
If U and L tapes are electrically charged, then we would expect the strength of the attractive interaction to decrease m the distance between the tapes increases. Male the same sort of observations you made with two U tapes: Mote a U tape very slowly toward a hanging L tape.
What is the sticky tape lab like?
In the Sticky Tape labwe study the behavior of the charged particles and develop a more complex model of the atom that accounts for the fact that some particles have positive charge whereas others are negatively charged. Most high school chemistry texts delve into an in-depth treatment of the internal structure of the atom very early on.
How much does a piece of tape weigh?
Sketch your experiment. Here are some hints: a 1 half-inch (1.2 cm) wide piece of tape 20 cm long has a mass of about 0.16 g
Is the tape negatively or positively charged?
No net charge is created in the process. If the pieces were originally neutral, the tape with more electrons will be negatively charged and the tape with fewer will be positively charged. The magnitude of the positive and negative charge will be the same.
How do you test for electrical interactions between tapes and strips?
Attach the strips (foil, paper, top and bottom) to the edge of the table; this will enable you to bring the other tapes and strips near in order to test for the presence and magnitude of electrical interactions between all combinations. See the figure below. F P T Btable
