what is Atom

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

What is the atomic mass of "F"

• 9
• 18
• 17
• 19

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NGSS.MS-PS1-1

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

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NGSS.MS-PS1-1

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

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

• nucleus 
• electron cloud
• core 
• center 

Tags

NGSS.MS-PS1-1

What is the mass of an atom if it has 11 protons, 12 neutrons, and 11 electrons?

• 22
• 11
• 34
• 23

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NGSS.MS-PS1-1

Who discovered the electron?

• Rutherford

• Thomson

• Milikan

• Dalton

What are the names of the particles in the nucleus?

• protons and neutrons
• protons and electrons
• photons and neutrons
• nucleons and protons

Tags

NGSS.MS-PS1-1

The protons and neutrons are inside of the nucleus, and contain almost all of _____

• the charge of the atom
• the volume of the atom
• the mass of the atom
• the kinetic energy of the atom

Tags

NGSS.MS-PS1-1

In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.

• Atoms
• Parts
• Molecules
• Hydrogen

Tags

NGSS.MS-PS1-1