Atomic Structure

Which particles make up the nucleus of an atom?

• protons and neutrons
• electrons and protons
• electrons, protons, and neutrons
• electrons and neutrons

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NGSS.MS-PS1-1

An element with a mass number of 10 and an atomic number of 6 has how many protons?

• 5
• 8
• 6
• 10

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NGSS.MS-PS1-1

How many electrons does Si contain? (click to see image)

• 14
• 28
• 2
• 4

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NGSS.MS-PS1-1

Elements which are shiny, conduct electricity and heat are called

• metal
• nonmetal
• metalloid
• nonexistent

Group 18 elements are known as the _____ _____ and have full valence shells.

• royal gases.
• supreme solids.
• noble gases.
• legit liquids.

An element's identity is determined by the number of

• electrons.
• protons.
• neutrons.
• valence.

The central region of an atom where its neutrons and protons are is called the

• nucleus 
• electron cloud
• core 
• center 

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NGSS.MS-PS1-1

The mass of this particle is so small that it is not counted.

• proton
• electron
• neutron
• quark

The term "neutral" means

• having only a little bit of charge
• having a positive charge
• having a negative charge
• having no charge at all

All atoms of a particular element have the same number of these

• electrons
• neutrons
• protons

Tags

NGSS.MS-PS1-1