Answer:
put a test tube over the opening, remove it and quickly put a lit splint near the mout or in the tube. if you hear a squeaky pop it is hydrogen.
Explanation:
hydrogen ignites in air.
Answer:
B sugar in water
Explanation:
because sugar dissolves in water while the others don't
As far as I know, the answer is B (breaking a rock)
dish Soap,Corn Syrup,Rubbing Alcohol, Milk,
Answer:
Compressions are the parts where the coils are close together.
