Intermolecular Forces --> Balancing Equations Quiz

The Law of Conservation of Mass states

• that matter exists in all states and reacts the same

• that matter can only be changed into new substances by introducing a catalyst

• that matter exists in the same state throughout any chemical change

• that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants

Tags

NGSS.MS-PS1-5

_Na₃PO₄₊_KOH ---> _NaOH + _ K₃PO₄

Which of the choices shows the equation correctly balanced?

• 1 Na₃PO₄+3 KOH

  --->

  3 NaOH + 1 K₃PO₄

• 2 Na₃PO₄+2 KOH

  --->

  3 NaOH + 1 K₃PO₄

• 1 Na₃PO₄+2 KOH

  --->

  2 NaOH + 1 K₃PO₄

• 3 Na₃PO₄+3 KOH

  --->

  3 NaOH + 1 K₃PO₄

The coefficients needed to balance this equation are:
_Ag(NO₃) + K₃(PO₄) --> Ag₃(PO₄) + K(NO₃)

• 1,3,1,3
• 1,1,3,3
• 3,1,1,3
• 3,1,3,1

What symbol is used to signify that a reactant or product is dissolved in water in a chemical equation?

• s
• l
• g
• aq

Hydrogen bonding occurs when hydrogen is bonded to N, O, or F.  Which of the following has hydrogen bonding?

• CBr₄
• NO₂
• H₂S
• NH₃

All molecules have London forces between them, but dipole-dipole and hydrogen bonding are so much stronger that when they are present we can ignore London forces.  Which of these has ONLY London forces?

• I₂
• NH₃
• OCl₂
• SH₂

Which substance would have the weakest intermolecular forces of attraction?

• CH₄

• NaCl

• H₂O

• MgF₂

Rank these in order of strength:

ion-dipole

London dispersion

hydrogen bond

dipole-dipole

• dipole-dipole>ion-dipole>hydrogen bond>London

• London>dipole-diple>hydrogen bond>covalent bond

• ion-dipole>hydrogen bond>dipole-dipole>London

• hydrogen bond>dipole-dipole>London>covalent bond

Which of the following shows the correct way to balance the chemical equation?
Fe + O₂ -> Fe₂O₃

• 4Fe + 3O₂ -> 2Fe₂O₃
• 2 Fe + 3O₂ -> Fe₂O₆
• 4 Fe + O₆ -> 2Fe₂O₃
• None of the options are correctly balanced.

Tags

NGSS.MS-PS1-5

Which of the following correctly balances this equation:

Sodium phosphate and potassium hydroxide will yield sodium hydroxide and potassium phosphate.

• 1 Na₃PO₄+3 KOH

  --->

  3 NaOH + 1 K₃PO₄

• 2 Na₃PO₄+2 KOH

  --->

  3 NaOH + 1 K₃PO₄

• 1 S₃PO₄+3 SOH

  --->

  3 SOH + 1 K₃PO₄

• 3 Na₃P+3 KO₂H

  --->

  3 NaH₂O + 1 K₃P