The teacher rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?

The balloons will repel each other.

The balloons will attract each other.

The balloons will become positively (+) charged.

What makes a charged balloon stick to the wall?

Extra electrons on the surface of the balloon push away electrons in the wall, leaving a positively charged area.

Protons transferred to the balloon when it was rubbed on metal.

The rubber in the balloon has a magnetic field that pulls on the wood in the wall.

Electricity in the balloon creates a magnetic field that attracts the metal in the wall.

What happens when you touch a metal doorknob after rubbing your shoes on the carpet?

Millions of electrons go from your finger into the doorknob

The doorknob sends a burst of electric current into your body

The doorknob sends millions of electrons into your finger

our finger becomes negatively charged

Which quantity and unit are correctly paired?

electric field strength and N/C

electrostatic force and electrons

Which of the following statements is false about electric field lines

electric field lines are always straight lines

electric field lines cannot cross

electric field lines point away from positive charge

electric field lines show how a proton would move in an electric field

At which point is the electric field the weakest?

C because the field lines are further apart

A because it is the furthest away

A because the field lines are further apart

C because it is the furthest away

It is observed that Balloon A is charged negatively. Balloon B exerts a repulsive effect upon balloon A. Would the electric field vector created by balloon B be directed towards B or away from B and why?

towards because electric field lines point away from positive charges

towards because electric field lines point away from negative charges

away because electric field lines point away from negative charges

away because electric field lines point toward positive charges

Q A and Q B are two charges creating an electric field. Based on the electric field lines, we can conclude

Q A is positive and Q B is negative

Q A is negative and Q B is positive

Which of the following is a true statement about the electric field between the two plates?

The field is attractive between the plates and uniform in strength

The field is repulsive between the plates and uniform in strength

The field is attractive between the plates and strongest near the positive

The field is repulsive between the plates and strongest near the positive

The electrical force between charges is strongest when the charges are

the electric force is constant everywhere.

Electrostatic Charges and Coulomb's Law

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40 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When an atom loses a valence electron, it becomes a(n) _____________ ion.

positive

negative

neutral

polyatomic

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Positive ions form when atoms _________ valence electrons.

lose

gain

gain or share

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many protons are in this element?

196

117

Cannot be determined

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What charge does an atom have if it LOSES an electron?

Positive (+)

Negative (-)

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-1

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Ions are:

atoms with a positive or negative charge

atoms with no charge

atoms with ONLY a positive charge

atoms with ONLY a negative charge

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What charge does an atom have if it GAINS an electrons?

Positive (+)

Negative (-)

Tags

NGSS.HS-PS1-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A positive ion is called a

cation

anion

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Electrostatic Charges and Coulomb's Law

When an atom loses a valence electron, it becomes a(n) _____________ ion.

Positive ions form when atoms _________ valence electrons.

How many protons are in this element?

What charge does an atom have if it LOSES an electron?

Ions are:

What charge does an atom have if it GAINS an electrons?

A positive ion is called a

A anion will be a ____ ion.

What types of charges attract?

Walking across a carpet is an example of charge being transferred by

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