How do hydrogen bonds compare with other intermolecular forces? A. Hydrogen bonds are stronger than dipole-dipole and van der waals forces.

B. Hydrogen bonds are weaker than dipole-dipole and Van der Waals forces

C. Hydrogen bonds are weaker than dipole-dipole forces but stronger than Van der Waals forces.

D. Hydrogen bonds are stronger than dipole-dipole forces but weaker than Van der Waals forces.

A

Explanation: Hydrogen bonds compare with other intermolecular forces because of that fact that they are stronger than other Van Der Waals forces. So, the answer to the question should be A.

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answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.