solid -> gas -> liquid gas -> liquid -> solid liquid -> solid -> gas solid -> liquid -> gas
I gave my students this multiple choice question: Which sequence has the states of matter listed from least to greatest kinetic energy?

Only one answer is correct among these 4 choices:
- solid -> gas -> liquid
- gas -> liquid -> solid
- liquid -> solid -> gas
- solid -> liquid -> gas

Could you tell me which one is correct?

solid -> liquid -> gas