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What happens to the process of dissolving if heat is decreased?
Spidee73
First of all, "heat is decreased" means the container in which you are trying to dissolve something is being cooled down. When molecules heat up they gain energy and move faster. If you are trying to dissolve sugar in water, for instance, heating up the water will cause its molecules to move faster and collide with the sugar crystals, which have many molecules in them, more often. This means the crystals break up faster, and the sugar dissolves faster. Conversely, if "heat is decreased" the water molecules slow down and don't have as much energy. They don't collide with the sugar crystals as often and the sugar doesn't break up as fast. End result: decreasing the heat means dissolving takes longer. Increasing means dissolving is faster.
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoElements tend to fall out of solution if cooled down quickly. If cooled down gradually, some over saturated solutions (also known as super saturated) may stay in solution until an outside agent effects it causing the elements to fall out of solution. That is how rock candy is made.
Wiki User
∙ 10y agowhen we dissolve a substance then first of all there may occur physical change like shape,colour,temperature etc. these changes are called physical changes.
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Can acid melt metal?
Don't confuse the process of melting, which is caused by heat, with the process of dissolving, which is caused by solvents such as acid. Acid can dissolve metal, but it does not melt metal.
What is dissolvement?
Dissolving is when something is gone. When you mix salt into water, the salt will eventually get smaller and smaller until it is gone. You say 'The salt has dissolved' when the element/compound is gone.
Does heat effect when dissolving salt?
Salt dissolves better in warm water.Also if the salt is in water it will automatically dissolve if the water is hot or cold.So in that case heat does not effect the dissolving of salt.
Is dissolving sugar in heat nonspontaneous?
yes its chemical change because the compound turns to gas
Which item decreases as heat is applied?
Volume is increased so density is decreased.
What is the term for Heat taken or released in a dissolving process?
I suppose that these are synonyms.
What happens to the temperature of the system when the heat energy is decreased?
It drops.
Effect of common salt on ice?
Dissolving a salt (NaCl, CaCl2) in water the heat of dissolution is released and the melting point of ice is then decreased.
What three ways will speed up the dissolving process?
1. You can stir it 2. You can heat it up so it boils 3. You can crush the material you are dissolving.
What effect does sunlight have on the rate of the dissolving process?
In a basic form sun light produces heat, heat act's as a catalyst which speed's up chemical reaction. SO in a nut shell sunlight makes the dissolving process occur more rapidly.
When dissolving a solid in liquid heat does what the rate of dissolving?
increases
What happens to heat when water evaporates?
Evaporation is an endothermic process and absorb heat.
Can acid melt metal?
Don't confuse the process of melting, which is caused by heat, with the process of dissolving, which is caused by solvents such as acid. Acid can dissolve metal, but it does not melt metal.
What is dissolvement?
Dissolving is when something is gone. When you mix salt into water, the salt will eventually get smaller and smaller until it is gone. You say 'The salt has dissolved' when the element/compound is gone.
How do you speed-up dissolving rates?
Heat and stirring
Does heat effect when dissolving salt?
Salt dissolves better in warm water.Also if the salt is in water it will automatically dissolve if the water is hot or cold.So in that case heat does not effect the dissolving of salt.
What is the name of the process by which air moves and carries heat energy?
Convection is the process by which heated air (or any fluid) rises within the same medium because of its decreased density, then sinks again as it cools.
