AP Unit 1

Which element is represented by this PES graph?

• aluminum

• phosphorus

• sulfur

• silicon

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many moles are in 16.94g of water?

• 16.94 mol H₂O

• 0.9401 mol H₂O

• 305.3 mol H₂O

• 1.063 mol H₂O

What is the molar mass of one mole of HCl?

• 79.92 grams per mole of HCl

• 36.46 grams per mole of HCl

• 35.45 grams per mole of HCl

• 1.01 grams per mole of HCl

Which element has the electron configuration 1s²2s²2p⁶3s²3p⁵?

• chlorine

• fluorine

• sulfur

• phosphorus

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Looking at atoms in the same valence energy level, what factor affects Coulombic attraction?

• number of protons

• distance from the nucleus

As the Coulombic attraction increases the atomic radius: increases or decreases?

• increases

• decreases

Which of the following will have a larger radius than Gallium (Ga)?

• Ge

• Al

• Mg

• Sr

Tags

NGSS.HS-PS1-1

Which would be the easiest to take an electron from?

• He

• F

• Ba

• Fr

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What element is the basis for all organic molecules?

• nitrogen

• hydrogen

• oxygen

• carbon

Tags

NGSS.HS-LS1-6