Equal in volume? The heavier on would be the denser one.
Equal in mass? They would weigh the same.
All solid can be liquified if the temperature is high enough.
it will condense and turn into liquids and if that cools too much it will turn to solid
When a liquid looses enough energy (heat), it turns into a solid.
Solids turn into liquids at their melting point.
Almost all solids will turn into liquid at some temperature.This process is called melting and the temperature at which the solid melts is its melting point.
All liquids can get 'frozen', it just means they turn into a solid state. This point is called the melting point. this refers equally to point where solids turn liquid and liquids turn solid. However, because you do not specify what type of oil (you could be talking about gasoline/petrol, or talking about oils in food, palm oil) i cannot tell you at what point it would freeze.
Ice melting is probably the most common sight
Solids become liquids when the temperature reaches melting point, groups of particles start to brake away from each other. This is when the solid starts becoming a liquid. Liquids become solids on cooling, the particles move slower and become a solid.
Solid to Liquid = MeltingLiquid to Gas = EvaporationboilingGas to Liquid = CondensationLiquid to Solid = Freezing
The density of solid substances is generally higher than that of liquids, which in turn are higher than gases. This is because the particles in a solid are tightly packed together, while in a liquid they are more spread out, and in a gas, they are far apart.
A material in solid phase changes to its liquid phase by absorbing energy. The intermolecular(inter-particular) bonds are broken as the temperature increases until enough bonds are broken that the rigid shape of the solid can no longer be maintained.*The energy required to turn a solid into a liquid, of the same temperature, is called the latent heat of fusion.
Different liquids have different freezing points. For water its 0 degrees celcius but other liquids will have different freezing points because of the element that make it up and the size of its molocules. ;)