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Freshly cut sodium has a metallic sheen. Within a few minutes, water in the air causes a layer of sodium hydroxide to develop on exposed surfaces. The reaction is strongly exothermic and the heat transferred to the local environment ignites the hydrogen that is produced. The hydrogen burns with a bright flame.
In other words, sodium reacting with water is a chemical change and NOT a physical change. (combustion)
Chemical changes such as combustion form new substances.
2 Na + 2 H2O > 2 NaOH + H2
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∙ 13y ago
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Is Sodium hydroxide dissolving in water a chemical or physical change?
physical
When sodium reacts with water is it a chemical or a physical change?
It is a chemical reaction for not only has the state changed of NaOH, but the identity of the substances have also changed.NaOH + H2O --> Na+ + OH-The "H2O" is not a reactant. It's actually supposed to go over the arrow. Sorry.Nonetheless, the dissolution of NaOH will increase the Hydroxide concentration, thus making it more basic. It will not change the identity of H2O.
Is the reaction between Sodium acetate and water a chemical reaction?
No, it is simply the water dissolving the sodium acetate, which is a physical change. There is a physical change when you introduce a seed crystal to the sodium acetate as the bonds in the chemical become different to form a solid. By adding water, you are just dissolving it and then allowing it to become supersaturated through heating.
Is sodium can react with water a chemical change?
The reaction of sodium and water is considered to be a chemical change.
Is water condensing a physical or chemical change?
water condensing is a physical change.
Is hydrchloric acid reacting with sodium hydroxide to produce a salt water and heat a physical change or a chemical change?
It is a chemical reaction - a chemical change.
Is sodium and potassium react violently with water a chemical change?
Sodium and potassium reacting violently with water is a chemical reaction, causing a chemical change.
Sodium hydroxide dissolve in water is physical change?
Yes, dissolving sodium hydroxide in water is a physical change.
What is the equation for sodium reacting with water?
Sodium reacting with water is: 2Na + 2H2O ----> 2NaOH + H2
Is cesium reacting with water a physical change?
This is a chemical reaction, a chemical change.
Is antacid medicine reacting with stomach acid is a physical change or a chemical change?
Its a chemical change. its like an acid reacting with a base to form salt and water.
Is reacting with water a physical change or chemical change?
it would be a chemical property because is changes
Is Sodium hydroxide dissolving in water a chemical or physical change?
physical
Is sodium and potassium reacting violently with water a chemical or physical change?
Their reaction with the water is a purely chemical change, however the chemical reaction is so intense and violent that it is usually followed by many dangerous physical changes (e.g. boiling of the water, flinging molten pieces of the unreacted metal at you, spattering drops of lye solution at you).
if sodium chloride dissolves in water what is it a chemical or physical change?
It
Is the dissolving salt in water a chemical or physical change?
It is a chemical change because of sodium and hydrogen bonds forming
Is hydrochloric acid reacting with sodium hydroxide to produce salt water and heat a physical or chemical change?
chemical as it is a permanent change and looks nothing like the starting reactant!
