10c - 20c
One easy way to separate mixtures into different substances is by freezing them. Once each substance has reached its freezing point, you can cut the substances a part.
Water expands when it freezes. Ice is lighter and denser than liquid water. Ice Floats! Most substances get denser when they turn from liquid to solid.
Well, most substances on the periodic table can be a solid if it is cool to that substances freezing point and can be a liquid if you heat it to its boiling point.
when it freezes
yes the melting point of solid and freezing point of liquid of a substance is differ but in the case of water the melting and freezing point is same.
Liquid solidifies through the removal of heat. This usually entails the lowering of temperature to the freezing point of that pure (or impure) substance. Impurities will lower the freezing point of liquid, and mixtures of substances will result in a range of freezing points.
boiling point is always lower.
all i know is that solutes lower its freezing point but i kinda think they dissolve into a liquid.
If the substance is a liquid, cool it until it freezes. Record the temp while it is freezing, pure substances freeze at a distinct temperature, the freezing point. If it is a solid heat until it melts --- melting point = freezing point.
Solids changing to liquids are melting Liquids changing to solids are freezing Solids changing to gas are subliming Liquids changing to gas are boiling Gases changing to liquids are condensing.
It totally depends on the liquid, different for every compound. The tempature at which this happens is also dependent on what the air pressure is aswell.
Adding soluble substances in a liquid the freezing point is decreased.