Introduction to Atoms

Dalton's model of the atom was ...

• a solid sphere
• a sphere with embedded electrons
• a small nucleus with circling electrons
• none of these

The Gold Foil experiment was the work of which scientists?

• JJ Thompson
• Dalton
• Ernest Rutherford
• Niels Bohr

Protons have a ___ charge

• neutral
• negative
• positive
• square

Electrons have a ___ charge

• positive
• neutral
• negative
• strange

Tags

NGSS.MS-PS2-3

Neutrons are ____

• neutral
• positive
• negative
• oval

AMU stands for 

• atoms must unify
• atomic mass utility
• atomic mass unit
• a mini unicorn

Tags

NGSS.MS-PS1-5

The particle with the LEAST mass is the 

• proton
• electron
• neutron
• nucleus

According the the text, the mass number is the sum of these two particles.

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

One nanometer is equal to 

• 1 meter
• 0.005 meters
• 0.000000001 meters
• 10

Protons and neutrons each have an AMU of 

• 1.0
• 2.0
• 0.5
• 1/1840