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Dissolving salt into water is it physical or chemical change?
This is a physical change. You can separate the salt and water by the physical process of distillation or evaporation where the water is boiled away and the salt is left behind.
When a glass of water is left out in the sun the water gradually disappear is it chemical change?
Any change of state (solid to liquid, liquid to gas, or the reverse of these) is a physical change.You still have the stuff you started with (water to steam for example).A chemical change will result in totally different compounds (sugar burning will form carbon, carbon dioxide and water for example).
Phsical or chemical change?
there are two changes in matter: physical change and chemical change. physical change means the change in size, shape, texture and any other physical characteristics, but no any new substance made or added. while in chemical change, there's a change in the object's physical appearance but also made a new substance.
Is the liquid propane in a barbecue evaporates away because the user left the valve open a chemical or physical change?
It's a physical change. Chemically, it's still propane - but it's physically changed from a liquid to a gas.
Is mixing water and baking soda a chemical or physical change?
chemical. when a reaction is undertaken that changes the structure of a substance and creates a new substance it is a chemical reaction. a gas is created during the reaction and a new chemical compound (sodium acetate) is left behind leaving neither of the previous elements present.
Is opened a can of fuit left out of the refigerator a physical or chemical change?
it is a physical change because it is still fruit.
When you burn sugar you are left with carbon. Is that a chemical or physical change?
Chemical change. This is an incomplete combustion, reaction with O2.
Is wood and leaves that are left to rot and to form humus a chemical or physical change?
Both. In breaking down into humus, both chemical and physical change takes place.
Is dissolving sugar in water a physical changes?
Yes, dissolving sugar in water is a physical change. If you let the water evaporate, you the sugar will be left behind. Evaporation is a physical process, not chemical.-No, It is a Chemical change.
How is dissolving a physical change?
Dissolving sugar in water is a physical change. If you let the water evaporate, the sugar will be left behind. Evaporation is a physical process, not chemical.
Is melting butter a physical change or chemical change?
As you may know, determining whether a change is chemical or physical can sometimes be a real pain! This particular change is a hard one. If your talking about butter slightly melting on a hot day because it was left out on the counter, THAT is a physical change and is reversible by simply putting the butter into the fridge. However, melting butter on the stove and having it completely turn to liquid and turn a little brown, THAT is a chemical change and is hard to reverse... a chemical change has occurred while the butter was over the heat.
When Sugar dissolves in hot water a physical or chemical change?
When sugar dissolves in hot water, it is a physical change. This is because the sugar molecules are simply mixing with the water molecules but are not undergoing a chemical reaction to form new substances.
Is corrosion of a marble statue is physical change?
no because all you are doing is changing the shape and form
Is rust forming on a nail left outside a physical or chemical change?
because the chemical composition of the nail is changed, forming a new substance (the rust)
Exameple of a physical change and a chemical change?
A physical change is a change that can be undone. A chemical change cannot be undone. An example of this would be dissolving salt in water. This is a physical change because if you let the water in the container evaporate the salt will be left behind. A chemical change would be like burning a piece of wood since you cannot undo the change taking place to the wood.
Can you consider a chemical change dissolving salt in a water?
no because it is reversible. If you dissolve out the water you are left with NaCl. A change that is reversible is a physical change.
Is dissolving sugar physical or chemical?
Sugar dissolving would be an example of a physical change. This is because it does not change chemically, so it is still sugar.
