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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 hydrogen burns in chlorine gas chemical or physical change?
When you combust hydrogen in air, the hydrogen will combine with oxygen to form water. Therefore, the hydrogen and oxygen are undergoing a chemical change to become bonded together producing H2O: 2H2 + O2 → 2H2O + Heat
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.
When cesium metal reacts explosively with water does it go through a physical change or a chemical change?
The reaction between cesium metal and water is a chemical change because it involves the breaking and forming of chemical bonds to create new substances (cesium hydroxide and hydrogen gas). The explosive nature of the reaction is due to the rapid release of energy during this chemical transformation.
Is calcium nitrate plus ammonium hydroxide a physical change?
No, the reaction between calcium nitrate and ammonium hydroxide is a chemical change, as new compounds are formed with different properties than the original substances. This will typically result in the formation of solid calcium hydroxide and ammonium nitrate, which are not reversible through physical means.
If strontium reacts with water is it chemical or physical change?
Strontium reacts with water producing strontium hydroxide and hydrogen gas. This is a chemical change.
Is a sodium pellet placed in water catches fire and gives off hydrogen gas a physical or chemical change?
That is a chemical change. You are seeing a chemical reaction, where the sodium reacts with the water, forming sodium hydroxide and hydrogen gas.
Is hydrogen chemical or physical property?
Hydrogen is neither a chemical or physical property...it is a chemical element.
Is hydrogen a chemical or physical property?
Hydrogen is a chemical property because it is a pure substance and it cannot be broken down into simpler substances by physical means. It is the simplest and most abundant chemical element in the universe.
Is the gas produced when sodium mixes with water a physical change or chemical change?
It is a chemical change, as sodium cannot evaporate (or water go to water vapor) without added heat. The main gas produced in this highly exothermic chemical reaction is hydrogen, liberated from the water by the combination of a hydroxide radical (OH) with the sodium, yielding a sodium hydroxide (NaOH) solution. The heat released is typically sufficient to ignite and burn both the sodium and the released hydrogen. So pure sodium metal oddly appears to catch fire and burn when placed in water.
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.
When sodium is put into waterit react forming sodium hydroxide and hydrogen is this physical change or chemical change?
That's most definitely a chemical change, because new forms of matter are produced. Before the reaction, you had pure sodium and water. After the reaction (which is very explosive by the way), you have sodium hydroxide and hydrogen gas.
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 hydrogen peroxide decomposing a physical or chemical?
This is a chemical process.
Is a reacts with an acid to from hydrogen physical or chemical?
chemical change
What are some of potassiums physical and chemical proporties?
Physical: In pure form it is a shiny metal. It has a low density. It is malleable. Chemical: In pure form it corrodes easily upon exposure to air. It reacts violently with water to form potassium hydroxide and release hydrogen gas.
Is reacts with water physical or chemical change?
it would be a chemical property because is changes
