Atomic Structure and Dalton's Atomic Theory

What subatomic particles would you find in the nucleus of an atom?

• Protons only
• Protons and Neutrons
• Neutrons and Electrons
• Protons and Electrons 

Which subatomic particles contribute the most to the mass of an atom?

• Protons, Neutrons, Electrons
• Protons only
• Protons and Electrons
• Protons and Neutrons

What is the number of protons that the element in this image contain?

• 14

• 7

• 15

• 18

Tags

NGSS.MS-PS1-1

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

• 20
• 10
• 5
• 25

An element with a mass number of 11 and an atomic number of 5 has how many neutrons?

• 11
• 5
• 6
• 16

The particles of the atom you can find by knowing the atomic number.

• neutrons
• protons and electrons
• protons and neutrons
• atomic mass

What is the mass number of the atom pictured?

• 9

• 10

• 18

• 19

Tags

NGSS.MS-PS1-1

What is the atomic number of the atom pictured? 

• 9
• 10
• 18
• 19

Tags

NGSS.MS-PS1-1

What is the element name of the atom pictured? 

• Fluorine
• Neon
• Argon
• Potassium

Tags

NGSS.MS-PS1-1

Which scientist conducted experiments using alpha particles and thin gold foil, which later helped him develop his model for the atom?

• Ernest Rutherford

• Albert Einstein

• Niels Bohr

• J.J. Thomson