1.The number of air particles inside the test tube (and syringe) increased with an increase in yemperatut and the number of air particles decreased with a decrease in temperature.
2. The number of air particles inside the test tube (and syringe)stay the same, but they took up more space when the operation e inc waved ant took up less space and the temperature decreased.
Which explanation do you agree with 1 or 2?