You are given a science question (hard-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.
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Question: A student mixes vinegar and baking soda to use in a volcano model. The mixture causes the volcano model to feel cool when it is touched. What energy transformation has taken place?  
 (A) light energy changed to heat energy (B) heat energy changed to chemical energy (C) chemical energy changed to heat energy (D) chemical energy changed to light energy

Answer: B


Question: Emily made a cup of tea and stirred it with a spoon. The spoon became warm. How was the heat from the tea transferred to the spoon?  
 (A) convection (B) radiation (C) conduction (D) evaporation

Answer: C


Question: Which statement is true about the particles of a liquid compared to the particles of a gas?  
 (A) Particles of a liquid are a slower and further apart. (B) Particles of a liquid are faster and farther apart. (C) Particles of a liquid are slower and closer together. (D) Particles of a liquid are faster and closer together.

Answer:
C