#1: 2h2o + 2k (s) 2koh (l) + 2h2 (g) is an example of which type of reaction? a.

D) double-displacement

Explanation:

In a displacement reaction, one or more atoms replace one or more atoms of a given molecule to form a new one.

In this case, two atoms of K replace two atoms of H in the water molecules two form H2 and KOH.

Is double because two displacement happen in the global reaction equation.  

Explanation:

The following statements are falsifiable because they are objective statements that can be tested with the help of an experiment:

   Putting salt on a petri dish can increase bacterial growth.

   Particulate matter in the air can lead to more cases of bronchitis.

   Fuel burns more slowly in places with lower atmospheric pressure.

The following statements are non-falsifiable because they represent opinions and beliefs:

   A mixture of capsaicin and borax in water makes a great pesticide.

   The Grand Tetons may be the most impressive mountains in America.

   There are infinite universes that we cannot observe or contact.

Explanation: