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.

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b