Compare the type of change that occurs when a substance melts in when a substance that some fire. use complete sentences to justify the type of change that occurs.

Here's what I get  

Explanation:

When a substance melts, that is just a phase change. The substance does not change its chemical make-up. it stays the same. For example, when ice melts, it becomes liquid water. When it freezes again. it is still water, but in a solid form. Melting is a physical change.

When a substance burns, it changes into different substances with different properties. For example, when a match burns, it changes into carbon dioxide and water vapour. Burning is a chemical change.

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.

the correct answer would be b. amelia, because the particals of gas move really fast (charged particals) and gas also has a lot of room (particals move independently) so the only answer that has both of those is amelia's.