What describes the increase in volume of matter when it is heated?

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

5.6⋅10−^19  j

do you need the explaination?

a chemical change results in a new substance being formed; whereas a physical change will result in a different state of matter

explanation: