U2 Review (Zeph)

Who is most known for the planetary atomic model?

• Bohr
• JJ Thompson
• Heisenberg
• Rutherford

Metals are to the _____ of the stairs?

• Right
• Left

Tags

NGSS.HS-PS1-1

A new element is discovered and named Chemtite. Chemtite-90 occurs 70% of the time and Chemtite-89 is found 30% of the time.
Find the average atomic mass.

• 90
• 89.5
• 89.7
• 89.3

Isotopes have a different number of

• Protons
• Electrons
  Electrons
• Neutrinos
• Neutrons

A new isotope of Carbon has a molar mass of 15g. How many protons does it have?

• 9
• 8
• 7
• 6

He used a cathode ray to detect electrons

• Rutherford
• JJ Thompson
• Millikan
• de Broglie

What is the full electron configuration for Oxygen?

• 1s²2s²2p⁴
• ₈¹⁶O
• 1s²2p⁴
• 2p⁴

Tags

NGSS.HS-PS1-1

Is Fluorine more or less electronegative than Lithium?

• More
• Less

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What element is in the same period as Carbon?

• Nitrogen
• Silicon
• Diamond
• Aluminum

Group 1 is known as the

• Alkali metals
• Alkaline metals
• Alkal metals
• Alkalin metals