# What is the difference between negative charge and free electron?

• Candies2002
In summary, a negative charge is when an atom or molecule has an excess of electrons, resulting in an overall negative electrical charge. A free electron is an electron that is not bound to an atom or molecule and is able to move freely. These two concepts are closely related, as a negative charge is caused by an excess of free electrons. Negative charges cannot exist without free electrons, and while they are closely related, there are practical differences between the two, such as the fact that negative charge is a property of an object while free electrons are particles that can move and carry charge.
Candies2002
Homework Statement
What is the difference between negative charge and free electron?
Relevant Equations
No. I wonder what is the difference between negative charge and free electron?
No.

An electron carries negative charge. It is an electron.

A sheep has mass, but it is a sheep.

##\ ##

vela, rsk and Steve4Physics
When you see something like "the charge on a conductor is -1.0 μC" this says to you that the conductor is not neutral but has an excess of 6,241,509,074,460 electrons on it (give or take a few). You get that number by dividing the negative charge by the charge of one electron.

## 1. What is a negative charge?

A negative charge refers to an excess of electrons in an atom or molecule, resulting in a net negative charge. This means that the atom or molecule has gained one or more electrons, giving it a negative electrical charge.

## 2. What is a free electron?

A free electron is an electron that is not bound to an atom or molecule and is able to move freely. In other words, it is not part of an atom's nucleus or one of its orbiting electrons. Free electrons are commonly found in metals and play a crucial role in conducting electricity.

## 3. What is the difference between negative charge and free electron?

The main difference between negative charge and free electron is that a negative charge refers to the overall charge of an atom or molecule, while a free electron refers to a single electron that is not bound to an atom. Negative charge can be caused by an excess or deficiency of electrons, while free electrons are always in excess and are able to move freely.

## 4. How do negative charge and free electron affect the properties of a material?

Negative charge and free electrons play important roles in determining the properties of a material. For example, materials with a high concentration of free electrons are good conductors of electricity, while materials with a low concentration of free electrons are insulators. Negative charge can also affect the chemical reactivity and bonding of a material.

## 5. Can a material have a negative charge without any free electrons?

Yes, a material can have a negative charge without any free electrons. This can occur when the material has an overall excess of electrons, but these electrons are not able to move freely. This is often the case in insulating materials, where the electrons are tightly bound to their respective atoms or molecules, resulting in a net negative charge but no free electrons.

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