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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
What else can I help you with?
When Sodium ignites when dropped in water is it either a physical property or a chemical property?
i am asking the same quesion it is on my chemistry homework and i dont know the answer!!
Is Sodium hydroxide dissolving in water a chemical or physical change?
The dissolving of sodium hydroxide in water is a physical change because no new substances are formed. Sodium hydroxide breaks down into its ions in the water, but its chemical composition remains the same.
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.
What type of change is sodium hydroxide dissolving into water?
It is a physical change because no new substances are formed during the process of dissolving. Sodium hydroxide dissociates into its ions in water, but the chemical composition of the sodium hydroxide remains the same.
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 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 cesium reacting with water a physical change?
This is a chemical reaction, a chemical change.
When Sodium ignites when dropped in water is it either a physical property or a chemical property?
i am asking the same quesion it is on my chemistry homework and i dont know the answer!!
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
if sodium chloride dissolves in water what is it a chemical or physical change?
The dissolution of sodium chloride in water is considered a physical change because no new substances are formed - the sodium chloride remains as sodium and chloride ions in the water solution.
Give you 2 examples of physical and chemical change with water?
CHEMICAL CHANGE1. Melting ice2. Boiling waterPHYSICAL CHANGE1. Baking a cake2. Burning wood
Is dissolving sodium chloride a chemical or physical change?
Dissolving sodium chloride in water is a physical change because the chemical composition of sodium chloride remains the same. The sodium and chloride ions are simply dispersed throughout the water, but they can still be recovered by evaporating the water.
Is Sodium hydroxide dissolving in water a chemical or physical change?
The dissolving of sodium hydroxide in water is a physical change because no new substances are formed. Sodium hydroxide breaks down into its ions in the water, but its chemical composition remains the same.
What is word equation for sodium with water?
The word equation for sodium reacting with water is: sodium + water → sodium hydroxide + hydrogen gas.
Can sodium be decomposed by a chemical change?
No. Sodium is an element and elements cannot be broken down (decomposed) by a chemical change.
Is physical or chemical reaction takes place when sodium hydroxide mixed with water?
It is a physical change. The sodium hydroxide dissolves, but it is still sodium hydroxide.
