BR #21: U3 Atomic Structure

Subatomic particles with a positive charge

• neutrons
• atomic mass
• protons
• isotopes

Tags

NGSS.HS-PS1-8

The atom's mass is determined by the number of 

• protons and neutrons
• protons and electrons
• neutrons and electrons

All atoms of a particular element have the same number of these

• electrons
• neutrons
• protons

All of an atom's mass is considered to be this

• the cloud
• the nucleus
• the entire atom

Tags

NGSS.HS-PS1-8

The element Carbon, exists as two isotopes; Carbon-12 and Carbon-14 for example, what has changed in the atomic structure?

• Number of protons

• Number of neutrons

• Number of electrons

• None of the above

Tags

NGSS.HS-PS1-8

This particle is found in the nucleus and has no charge

• Neutron
• Proton
• Electron
• Orbital

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

• Electron
• Proton
• Neutron
• Neutral

This is a negatively charged particle found outside the nucleus

• Electron
• Proton
• Neutron
• Orbital

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What contribution did John Dalton make to atomic theory? 

• He discovered that every atom was positively charged. 
• He discovered that every element consisted of only one type of atom.  

• He discovered that atoms had nucleus. 

• He discovered that atoms could be divided into smaller parts. 

Tags

NGSS.HS-PS1-7

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

• Nucleus 
• Electron Cloud
• Core 
• Center