False. An increase in temperature is an exothermic reaction. However, when a temperature decreases this is known as an endothermic reactionz
If the cube is 3 cm on each side, then it has a volume of 27 cm^3 (3 x 3 x 3). Density is mass divided by volume, so its density is 72.9/27 = 2.7 g/cm^3.
<span>Going by the density, the cube is made of Aluminium - density is a fairly unique quantity</span>
Convection this is because convection is bull movement of molecules between fluids
