AP Chemistry Unit 1 and 2

How many sigma and pi bonds does this have?

• 1 sigma and 1 pi

• 2 sigma and 1 pi

• 1 sigma and 2 pi

• 2 sigma and 2 pi

Which substance would have the weakest intermolecular forces of attraction?

• CH₄

• NaCl

• H₂O

• MgF₂

Which substance has the weakest intermolecular forces?

• Substance A, boiling point of 75 °C

• Substance B, boiling point of 105 °C

• Substance C, boiling point of 25 °C

• Substance d, boiling point of 45 °C

Tags

NGSS.HS-PS1-3

Which of the following could be the identity of a white crystalline solid that exhibits the following properties? -It melts at 320°C. -It does not conduct electricity as a solid. -It conducts electricity in an aqueous solution.

• C₆H₁₂O₆(s)

• NaOH(s)

• SiO₂(s)

• Cu(s)

Tags

NGSS.HS-PS1-3

When the temperature of matter increases the particles...

• speed up and move closer

• speed up and move farther apart

• slow down and move closer together

• slow down and move farther apart

Tags

NGSS.HS-PS3-2

Which of the following is true about Ionic Bonds? (select ALL TRUE options)

• High melting point

• Low melting point

• Can dissolve in water

• Cannot dissolve in water

• Can conduct electricity

Tags

NGSS.HS-PS1-1

Why do atoms share electrons in covalent bonds?

• to become ions and attract each other

• to have a noble-gas electron configuration

• to increase their atomic numbers

• to lose extra electrons.

Tell which solution is the most concentrated,

• Mixture 1

• Mixture 2

• Mixture 3

• Mixture 4

Tags

NGSS.MS-PS1-2

Which of the following shows the correct conjugate acid base pair?

• HCI (acid) / H₃O⁺ (conjugate base)

• HCI (acid) / CI^- (conjugate base)

• HCI (base) / CI^- (conjugate acid)

• HCI (base) / H₃O⁺ (conjugate acid)

As you move down the periodic table atoms get bigger.  This is because ____________.

• The atoms have more mass.

• The atoms have more protons.

• The atoms have more energy levels

• The atoms have more nuetrons