Atomic Models

The majority of an atom's mass exists where?

• In the nucleus
• In the electron cloud
• In the space between the nucleus and the electrons
• In the neutrons

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NGSS.HS-PS1-8

What are electrons?

• Positively charged particles
• Neutrally charged particles
• Negatively charged particles
• Uncharged particles

What does the nucleus of an atom contain?

• Electrons and neutrons
• Protons and neutrons
• Neutrinos and positrons
• DNA and RN

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NGSS.MS-PS1-1

How are neutrons different from protons and electrons?

• They are more massive than protons and electrons
• They have no electrical charge
• They are less massive than protons and electrons
• Protons and electrons exist in atomic nuclei; neutrons orbit the nucleus in a "cloud"

How are electrons arranged in an atom?

• In groups of five
• In energy levels
• By color
• By shape

Tags

NGSS.HS-PS1-1

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

• Neutron
• Electron
• Proton
• Nucleus

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NGSS.MS-PS1-1

He proposed the "muffin" or "plum pudding model of the atom.

• John Dalton
• Niels Bohr
• Ernest Rutherford
• JJ Thomson

What are electrons?

• Massive, positively charged particles
• Tiny, negatively charged particles
• Clouds of dust in the nucleus
• Neutral particles around the nucleus

Tags

NGSS.MS-PS1-1

The atomic mass is dependent on which two subatomic particles?

• Protons and electrons
• Protons and neutrons
• Neutrons and electrons
• Electrons and the nucleus

Electrons and protons are always equal making the atom electrically ___________.

• charged
• negative
• neutral
• positive

Tags

NGSS.MS-PS1-1