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When placed in H a sodium pellet catches on fire as hydrogen gas is liberated and sodium hydroxide forms is it physical change or chemical change?
The reaction of a sodium pellet in water (H₂O) is a chemical change. This is because it involves the transformation of sodium into sodium hydroxide (NaOH) and the liberation of hydrogen gas (H₂), indicating the formation of new substances. The burning of sodium and the release of gas are also characteristic of chemical reactions, as they involve changes in the chemical structure of the reactants.
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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 hydrogen chemical or physical property?
Hydrogen is neither a chemical or physical property...it is a chemical element.
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 hydrogen peroxide decomposing a physical or chemical?
This is a chemical process.
Are compounds created through physical changes?
No, only through chemical reactions. Physical changes never change the chemical makeup of something. For example, water tuning in to ice is a physical change. Ice and water both have the chemical symbol H20. On the other hand, a sodium - water reaction forms Sodium Hydroxide and Hydrogen. The compound, hydroxide, is formed.
When placed in H2O a sodium pellet catches on fire as hydrogen gas is liberated and sodium hydroxide forms chemical or physical change?
This is a chemical change. When sodium reacts with water, it undergoes a chemical reaction to produce hydrogen gas and sodium hydroxide. The formation of new substances (sodium hydroxide) and the evolution of gas (hydrogen) indicate a chemical change rather than a physical one.
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.
