Bohr, Rutherford, Quantum Mechanics

What is the tiny, massive central part of the atom?

• Neutron
• Electron
• Proton
• Nucleus

Tags

NGSS.MS-PS1-1

What element is represented in this Bohr Model? 

• Carbon
• Hydrogen
• Aluminum
• Lithium

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NGSS.MS-PS1-1

How many electrons does potassium K contain? 

• 19
• 39
• 20
• 40

Tags

NGSS.MS-PS1-1

What is the mass number of this atom?

• 1
• 3
• 4
• 7

Tags

NGSS.MS-PS1-1

What group does this element belong to?

• Group 1: Alkali metals
• Group 18: Noble Gases
• Group 2: Alkaline-Earth Metals
• Group 17: Halogens

Tags

NGSS.MS-PS1-1

Carbon-12 has 6 protons and 6 neutrons. How many electrons will orbit the nucleus?

• 12
• 6
• 3
• 18

Tags

NGSS.MS-PS1-1

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the atomic number of this atom?

• 2
• 4
• 6
• none of the above

Tags

NGSS.MS-PS1-1

How many valence electrons?

• 2
• 3
• 5
• 10

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many electrons does potassium K contain? 

• 19
• 39
• 20
• 40

Tags

NGSS.MS-PS1-1