Unit 2: Atom

This particle is found in the nucleus and has no charge

• Neutron
• Proton
• Electron
• Orbital

Tags

NGSS.HS-PS1-8

This particle is found in the nucleus and has a positive charge

• Electron
• Proton
• Neutron
• Neutral

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NGSS.HS-PS1-8

This is a negatively charged particle found outside the nucleus

• Electron
• Proton
• Neutron
• Orbital

Rutherford's gold foil experiment provided evidence that...

• Negative and positive charges are spread evenly throughout the atom.
• Alpha particles have a positive charge.
• Gold is not a dense as previously thought.
• There is a dense positively charged nucleus at the center of an atom.

Tags

NGSS.HS-PS1-8

J.J. Thomson provided evidence that an atom...

• is the smallest particle of matter
• contains negatively and positively charged particles
• has an overall negative charge
• has an overall positive charge

What contribution did John Dalton make to atomic theory? 

• He discovered that every atom was positively charged. 
• He discovered that every element consisted of one type of atom.  
• He discovered that atoms had nuclei. 
• He discovered that atoms could be divided into smaller parts. 

Tags

NGSS.HS-PS1-7

Ernst Rutherford discovered which part of the atom through the use of gold foil?

• Proton
• Neutron
• Electron
• Orbitals

Niels Bohr suggested that electrons.......

• are found in specific orbits
• electrons are scattered throughout the atom
• electrons move according to their energy level
• electrons are positive

What is the atomic number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the mass number defined as?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

Tags

NGSS.HS-PS1-8