Electric Charge and Electric Forces

In a stable atom the amount of electrons is equal to the amount of

• neutrons

• protons

• atomic mass

• neutrons + protons

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What is the charge of the electron

• positive
• no charge
• negative
• neutral

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Which particle has a positive charge?

• electron
• orbital
• proton
• neutron

What types of charges attract?

• Positive and Positive
• Positive and Neutral
• Negative and Neutral
• Positive and Negative

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The accumulation of excess electric charge on an object is called

• Static electricity 
• Electric discharge
• Resistance
• Circuit 

Electric charges that are alike _______ each other.

• Attract
• Repel

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Electric charges that are different _______ each other.

• Attract
• Repel

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If a substance has an excess number of electrons on its surface, what type of charge does it have?

• A negative charge
• A positive charge
• A neutral charge
• A nuclear charge

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A balloon has a negative charge. A glass rod has a positive charge. What will happen when the rod is brought near the balloon?

• the balloon will be attracted to the rod

• the balloon will remain in place

• the balloon will be repelled by the rod

• the balloon will spin in circles

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glass, rubber, silk, and plastic are all examples of

• Conductors

• Insulator

• Thermel conductivity

• Materials