Which of the following statements is incorrect? a. The boiling point of non-polar substances tends to decrease with increasing molecular weight
b. The boiling point of H2S is lower than H20
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c. Dispersion (London) forces are the weakest type of intermolecular interactions.
d. The strong intermolecular attractions in H20 result from hydrogen bonding.

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.

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

the answer is barium and copper bromide