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Is decomposing water by passing an electric current through it a chemical or physical change?
Decomposing water by passing an electric current through it is a chemical change because it involves the breaking of the chemical bonds in water molecules (H2O) to form hydrogen gas (H2) and oxygen gas (O2). This reaction results in the formation of new substances with different chemical properties.
What is the chemical formula for potassium metal?
Since Potassium is a element it does not have any chemical formula. It has a chemical symbol K, which is derived from its Latin name Kallium.
What is the balanced chemical equation for potassium metal and chlorine gas react?
The balanced chemical equation for the reaction between potassium metal and chlorine gas is: 2K(s) + Cl2(g) -> 2KCl(s), where potassium metal reacts with chlorine gas to form solid potassium chloride.
Is potassium cloride dissolving in water a chemical change?
When potassium chloride dissolves in water, it is a physical change as there is no change in the chemical composition of the substances. The potassium chloride molecules remain as potassium and chloride ions in the water solution.
What is the chemical equation of potassium metal and chlorine gas combine to form potassium chloride?
The chemical equation for the reaction between potassium metal and chlorine gas to form potassium chloride is 2K(s) + Cl2(g) -> 2KCl(s).
Is decomposing water by passing an electric current through it a chemical or physical change?
Decomposing water by passing an electric current through it is a chemical change because it involves the breaking of the chemical bonds in water molecules (H2O) to form hydrogen gas (H2) and oxygen gas (O2). This reaction results in the formation of new substances with different chemical properties.
What is the chemical formula for potassium metal?
Since Potassium is a element it does not have any chemical formula. It has a chemical symbol K, which is derived from its Latin name Kallium.
Is sodium metal exploding in water a physical property?
No, sodium metal exploding in water is a chemical reaction, not a physical property. Physical properties are characteristics that can be observed or measured without changing the substance's composition, such as color, density, or melting point.
What is the balanced chemical equation for potassium metal and chlorine gas react?
The balanced chemical equation for the reaction between potassium metal and chlorine gas is: 2K(s) + Cl2(g) -> 2KCl(s), where potassium metal reacts with chlorine gas to form solid potassium chloride.
Is potassium a compound or a element?
Potassium is an element with the chemical symbol K and atomic number 19. It is a soft, silvery-white metal that belongs to the alkali metal group of the periodic table.
Is potassium cloride dissolving in water a chemical change?
When potassium chloride dissolves in water, it is a physical change as there is no change in the chemical composition of the substances. The potassium chloride molecules remain as potassium and chloride ions in the water solution.
Is K2CO3 a metal?
Potassium carbonate is a compound, not a chemical element.
What is the chemical equation of potassium metal and chlorine gas combine to form potassium chloride?
The chemical equation for the reaction between potassium metal and chlorine gas to form potassium chloride is 2K(s) + Cl2(g) -> 2KCl(s).
When a small piece of potassium is dropped into a beaker of water the potassium moves about rapidly and then ignites within secounds the metal is gone and all activity ceases Is that chemical change?
Yes, that is a chemical change. When the potassium reacts with water, it forms potassium hydroxide and releases hydrogen gas. The rapid movement and ignition indicate a chemical reaction taking place.
What is the chemical equation potassium metal and chlorine gas combine to form potassium chloride?
The chemical equation for the reaction between potassium metal and chlorine gas to form potassium chloride is: 2K + Cl2 -> 2KCl
Is a metal surface being ground a chemical change?
Grinding a metal surface is a physical change, not a chemical change. The metal is being physically altered in shape and size, but its chemical composition remains the same.
What is the element KBr?
KBr is the chemical formula for potassium bromide, which is a compound composed of one potassium atom and one bromine atom. It is commonly used in medicine as a sedative and in photography as a developer.
