No it is a organic molecule.
Answer:
Your answer would be D.) Convection. I hope this helps you! :)
<span>No, the denisty of any substance/liquid is always constant, no matter what the volume or mass is. Once the mass g/ volume mL is taken into consideration, the effect of the ammount of liquid given is canceled out. Thus, no matter what your sample is, the density of water will always be 1 g/mL</span>
They are in fact changing physically and chemically. Physically, they change their shape, and chemically, the chemicals inside them (which I don't want to name), are basically burning to put it into simplest words. If you really want the chemicals that are being chemically replaced and burned, just tell me.