You observe that a negatively charged plastic pen repels a charged piece of magi

Question

You observe that a negatively charged plastic pen repels a charged piece of magic tape. You then observe that the same piece of tape is repelled when brought near a metal sphere. You are wearing rubber soled shoes, and you touch the metal sphere with your hand. After you touch the metal sphere, you observe that the tape is attracted to the metal sphere. Which of the following statements could be true? Check all that apply. Electrons from the sphere traveled through your body into the Earth. Sodium ions from the salt water on your hand moved onto the sphere. Chloride ions from the salt water on your hand moved onto the sphere. Electrons from your hand moved onto the sphere. The excess negative charge from the sphere spread out all over your body. After you touched it, the metal sphere was very nearly neutral. Electrons from the sphere moved into the salt water on your skin, where they reacted with sodium ions.

Explanation / Answer

Sodium ions from the salt water on your hand moved onto the sphere.
The excess negative charge from the sphere spread out all over your body
After you touched it, the metal sphere was very nearly neutral.
Electrons from the sphere moved into the salt water on your skin, where they reacted with sodium ions.

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