8th Atomic Model Quiz

Who believed that matter existed of very small particles called atomos?

• John Dalton

• Democritus

• J.J. Thompson

• Ernest Rutherford

According to John Dalton, what are atoms made of?

• Protons, neutrons, and electrons

• Positive and negative charges

• Indivisible particles

• Heavy fast-moving particles

Which model suggested that electrons move around rapidly within a positively charged matrix?

• Plum Pudding Model

• Thomson Model

• Rutherford Model

• Bohr Model

What are the three basic particles that make up atoms?

• Protons, neutrons, and electrons

• Positive and negative charges

• Alpha particles, beta particles, and gamma rays

• Atoms, molecules, and compounds

What determines the identity of an element?

• The number of neutrons in the nucleus

• The number of electrons in the atom

• The number of protons in the nucleus

• The number of isotopes present

What is the mass number of an isotope?

• The total number of particles in the nucleus

• The number of protons in the nucleus

• The number of neutrons in the nucleus

• The number of electrons in the atom

What is the atomic number of an element?

• The total number of particles in the nucleus

• The number of protons in the nucleus

• The number of neutrons in the nucleus

• The number of electrons in the atom

According to the octet rule most elements need _______ valence electrons.

• 2
• 8
• 6
• 18

What is the "Octet Rule"?

• All atoms want a full valence shell.

• All atoms want to have 2 valence electrons.

• All atoms want to have 8 valence electrons.

Tags

NGSS.MS-PS1-1

How many electrons should Sulfur have around its Lewis dot model?

• 5
• 6
• 7
• 8