What particle provided the positive charge for an atom?

• proton 
• neutron
• electron
• nucleus

Which particle does not contribute mass to the atom?

• Proton
• Neutron
• Electron
• Nucleus

Which particle contributes the negative charge to the atom?

• proton
• electron
• neutron
• nucleus

How many protons are in this element?

• 79
• 196
• 117
• Cannot be determined

Tags

NGSS.HS-PS1-1

What is the atomic mass (rounded to the nearest whole number) of this element

• 196
• 196.95
• 197
• 79

What scientist is best known for his "Plum Pudding" model of the atom?

• J.J. Tomson
• Ernest Rutherford
• John Dalton
• Democritus

What scientist is best known for his gold foil experiment?

• J.J. Tomson
• Ernest Rutherford
• John Dalton
• Democritus

Who is the first scientist to think that the atom was the smallest unit of matter?

• J.J. Tomson
• Ernest Rutherford
• John Dalton
• Democritus

What scientist first developed 4 rules for atomic theory, and helped kick start modern chemistry?

• J.J. Tomson
• Ernest Rutherford
• John Dalton
• Democritus

Tags

NGSS.HS-PS1-7

All matter is made of what?

• energy 
• atoms 
• electrons 
• compounds 

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5