How do protons and electrons differ

Explain Show students models comparing the number of protons and electrons in the plastic and skin before and after rubbing them together. Explore Have students investigate what happens when a rubbed plastic strip is held near a desk or chair. Procedure, part 2 Charged plastic and neutral desk Charge one strip of plastic the same way you did previously. This time, bring the plastic strip toward your desk or chair.

Expected results The plastic moves toward the desk. Have students charge two pieces of plastic and hold them near each other to see if electrons repel one other. Ask students to make a prediction: What do you think will happen if you charge two strips of plastic and bring them near each other?

Procedure, part 3 2 pieces of charged plastic Charge two strips of plastic Slowly bring the two strips of plastic near each other. Expected results The strips will move away or repel each other. Ask students: What happened when you brought the two pieces of plastic near each other? The ends of the strips moved away from each other. Use what you know about electrons and charges to explain why this happens.

Each strip has extra electrons so they are both negatively charged. Because like charges repel, the pieces of plastic repelled each other. Explore Have students apply their understanding of protons and electrons to explain what happens when a charged balloon is brought near pieces of paper.

Materials for each group Inflated balloon Small pieces of paper, confetti-size Procedure Rub a balloon on your hair or clothes. Bring the balloon slowly toward small pieces of paper. Expected results The pieces of paper will jump up and stick on the balloon.

Ask students: What did you observe when the charged balloon was held near the pieces of paper? The paper pieces moved up and stuck on the balloon. Use what you know about electrons, protons, and charges to explain why this happens. When you rub the balloon on your hair or clothes it picks up extra electrons, giving the balloon a negative charge. When you bring the balloon near the paper, the electrons from the balloon repel the electrons in the paper.

Since more protons are at the surface of the paper, it has a positive change. The electrons are still on the paper, just not at the surface, so overall the paper is neutral. Opposites attract, so the paper moves up toward the balloon. Extra Extend Demonstrate how electrons can attract a stream of water. Materials for the demonstration Sink Balloon Procedure Rub a balloon on your shirt or pants to give it a static charge.

Turn on the faucet so that there is a very thin stream of water. Slowly bring the charged part of the balloon close to the stream of water. Expected results The stream of water should bend as it is attracted to the balloon. Ask students: What did you observe when the charged balloon was held near the stream of water?

The stream of water bent toward the balloon. When you bring the balloon near the stream of water, the electrons from the balloon repel the electrons in the water. Since more protons are at the surface of the water, it has a positive change. Opposites attract, so the water moves toward the balloon. Downloads Lesson 4. Student Reading Use this related reading to extend student comprehension after completing the lesson. Atoms make up all matter, including mineral crystals.

While electrons, protons and neutrons make up all atoms. The Atomic Theory of Dalton clarified a great deal about matter, chemical reactions and chemistry. The difference between electron, proton and neutron is the charge they carry. Electrons are charged negative, protons are charged negative, and neutrons do not carry any charge. Rather they are neutral.

Protons, electrons and neutrons are the subatomic particles that comprise atoms. The electron has a negative charge. The symbol for electrons is e—. The orbits of electrons are located outside the nucleus of the atoms.

When the comparison is made, the weight of the electron has no bearing. Electrons have a role in nuclear processes as well as chemical reactions. And that is how the atoms preserve their identity and uniqueness.

They have different charges and differ in their masses. Also, the roles of each of the sub-atomic particles are quite different from each other. The main difference between Proton, Neutron and Electrons can be found in their charges.

Protons are positively charged and neutrons are neutral whereas electrons are negatively charged. Protons are found in the nucleus of the atom, and they reside together with neutrons. The proton was discovered by Earnest Rutherford, who claimed that most of the space of an atom was empty, and the mass was centered only in a small dense area within an atom called the nucleus. Protons are positively charged. The charge, in this case, is defined by the amount of coulombic charge of an electron.

The charge of the proton is equal to the charge of the electron and, therefore, can be expressed as 1e. The atomic nucleus remains positively charged due to the presence of protons. And an electron is considered to have a unit electrical charge generally represented as e. The electron charge is measured in Coulomb and has a value of about 1. And all the electrons are considered to be identically similar to each other. Proton is another major particle of an atom with a charge of positive polarity.

As the nucleus of the atom is at the center thus a proton holding a positive charge is present at the center of the atomic structure. A noteworthy point over here is that the number of protons that are present in an atom signifies its atomic number.

As the nucleus holds both protons and neutrons thus combinedly called nucleons. As electrons and protons hold the same charge of opposite polarity thus there exists a force of attraction between them inside the atom. Due to this attractive force, the electrons and protons are attached within the atom. This is the reason ideally the electrons are bounded and moves in the orbital path. An atom has the same number of electrons and protons so the positive and negative charges get canceled making the atom electrically neutral.