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Biblioteka

LR247.1.3: Electric Charge

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Posljednje ažuriranje 7 months ago
22 questions
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Check for Understanding:

1. Atoms make up all matter and have three particles that can cause electric charge.

2. Protons have a positive charge, electrons have a negative charge, and neutrons have no overall electric charge.

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The world is made of tiny particles that cannot be seen with the naked eye. These particles are called atoms. Atoms make up all matter and are made up of three types of particles that cause electric charges. Click the buttons below to learn more.

Many atoms have no overall electric charge because the protons and the electrons of an atom are equal. However, atoms can become unbalanced. Atoms rarely lose their protons, but electrons often move between atoms. If an atom gains more electrons than protons or more protons than electrons, the atom is unbalanced and develops an overall electric charge.

When an atom has more protons than electrons, it has an overall positive charge.

When an atom has more electrons than protons, it has an overall negative charge.

Pitanje 1
1.

Which of these are made of atoms?

Pitanje 2
2.

are parts of an atom with no overall charge.

Pitanje 5
5.

Place the correct charges on the correct image.

Drugi mogući odgovor:
positive
neutral
negative

What would increase the chances of an electric charge forming?

An action can help cause electrical charges to form. For example, rubbing an object on another object could increase the chances of electrical charges forming. This happens because rubbing increases the movement of electrons between atoms and causes them to become unbalanced and have an overall charge.

When atoms have a negative or positive overall charge, they create electric force. Electric force is a push or pull between matter with different charges.

Pitanje 6
6.

Check for Understanding:

1. Electric force is a push or pull between matter with different charges.

2. Objects with the same overall charge will repel.

3. Objects with opposite overall charges will attract.

Pitanje 9
9.

Electric force is __________.

Static electricity is a buildup of charged subatomic particles on an object. Click on the numbered buttons to explore how static electricity works.

Pitanje 10
10.

Static electricity is asubatomic particles on an object.

Pitanje 11
11.

Electrons are created when a person rubs a balloon on his or her head.

Conservation of charge states that electrons cannot be destroyed when an object becomes charged. Objects can only take or give electrons to other objects. Two objects can become charged when objects are rubbed together from friction. Electrons move from one object to another. The object that loses electrons becomes positively charged, and the object that gains electrons becomes negatively charged.

One object can become charged when a charged object directly touches it through conduction. Electrons transfer from the object with a more negative charge to the object with a more positive charge.

Charges can also be rearranged within an object through induction. This ruler has a negative charge. When it is moved near the metal knob, electrons in the metal knob are repelled and move to the end of the knob. The front of the knob then has a positive charge, and the end of the knob has a negative charge.

Pitanje 12
12.

Which of the following are ways in which an object can become charged?

Pitanje 13
13.

The slippers become charged after rubbing on carpet throughcharge, and an electron has a

There are an equal number of protons and neutrons in the atom. Therefore, the particles in the atom are balanced. Balanced atoms are neutral, or have no overall electric charge.

Pitanje 17
17.

What is static electricity?

Pitanje 18
18.

Which diagram is correctly labeled?

Pitanje 19
19.

particles.

Pitanje 20
20.

Electric force can cause __________.

Check all that are true (choose 2).

Pitanje 21
21.

What is wrong with this picture?

Pitanje 22
22.

Which object below would attract a negatively charged object?