Chapter 3: The Atom

This particle determines what element you have - the elements identity.

• electron
• proton
• neutron
• valence shell

This causes the mass of the nucleus to increase.

• adding an electron
• adding a neutron
• more orbitals
• adding negatively charged particles

Tags

NGSS.HS-PS1-8

What are the maximum number of electrons that go on the first 3 energy levels?

• 2,4,16
• 2,8,18
• 4,8,12
• 3,4,6

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NGSS.MS-PS1-1

The particles of the atom you can find by knowing the atomic number.

• neutrons
• protons and electrons
• protons and neutrons
• atomic mass

Tags

NGSS.MS-PS1-1

What is the mass number and name of an element with 8 protons and 8 neutrons?

• 16 - Carbon
• 16 - Oxygen
• 24 - Oxygen
• 8 - Neon

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NGSS.HS-PS1-8

Elements on the periodic table increase by...

• atomic mass
• size
• mass number
• atomic #

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NGSS.HS-PS1-2

What is the difference between the atomic mass and the mass number?

• the atomic mass is always a whole number
• the atomic mass equals the atomic #
• mass number is the rounded atomic mass - always a whole number
• electrons

How many protons does this element have?

• 40
• 21
• 20
• 41

Tags

NGSS.HS-PS1-1

What particle resides in the nucleus and has no charge?

• Proton
• Neutron
• Electron
• Crouton

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NGSS.HS-PS1-8

Who came up with the model in which electrons orbit the nucleus in specific levels?

• JJ Thomson
• Earnest Rutherford
• Niels Bohr
• Erwin Schrodinger