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because its special gus
They raise the melting point of water - preventing the water turning to ice.
melting ice a physical change
The sawdust acts as insulation. But styrofoam or a Dewar flask will work much better.
melting ice a physical change
Simple. You keep ice in dry ice. But be careful not to eat dry ice!
because its special gus
salt lowers ice's melting point
Substances (solutes) are added to water to prevent it from freezing, not to prevent it from melting. Nothing added to ice will raise its melting point above 0°C.However, anything that insulates ice from external heat will keep it frozen longer. This includes blankets, thermos bottles, or the walls of a freezer.
tgf
to make an insulator prevent ice from not melting is to use tinfoil and dirt.
nothing
They raise the melting point of water - preventing the water turning to ice.
Melting ice turns the ice into water.
yes but not to the same extent. solutes prevent ice formation by lowering the melting point of water. sugar water does have a lower melting point than pure water but it is not as effective as simpler salts because it is less soluble. (conc. of solutes is related to the melting point)
melting ice a physical change
ice melting is a physical reaction