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What is meant of '. ' in chemical reaction?
The "." in a chemical reaction represents a phase boundary or a physical state change. It separates reactants from products, indicating a change in state, such as from solid to liquid or gas to aqueous.
What shows a reaction in a solution consisting of only those particles directly involved in the chemical change?
A net ionic equation shows a reaction in a solution by only including the ions that participate in the chemical change, disregarding spectator ions that do not react. This allows for a clearer representation of the actual chemical reaction occurring in the solution.
What is indicated by formation of gas precipitate release of heat or a color change is?
The formation of gas indicates a chemical reaction producing a gas as a product. Precipitate formation shows the formation of a solid substance from a chemical reaction. Release of heat indicates an exothermic reaction, which releases energy in the form of heat. A color change is indicative of a chemical change where the substances involved absorb or emit light in different parts of the spectrum.
Is flammability a physical or a chemical?
Flammability is considered to be a chemical and not a physical change. This based on the fact that combustion will take place which is a chemical reaction.
What is chemical equeation?
Chemical equations show what happens when a chemical change occurs. For example, in the combustion of Hydrogen(H2), water(H2O) is formed. The chemical equation for this reaction is: 2H2 + O2 -----> 2H2O This chemical equation shows that when H2 reacts with O2 , H2O is formed.
What are the five observations of chemistry that shows that a chemical reaction have taken place?
Formation of a precipitate; change in color; change in temperature; formation of a gas; emission of light.
What is meant of '. ' in chemical reaction?
The "." in a chemical reaction represents a phase boundary or a physical state change. It separates reactants from products, indicating a change in state, such as from solid to liquid or gas to aqueous.
How does the chemical equation show that a chemical reaction has occured?
A chemical equation shows that a chemical reaction has occurred by representing the reactants transforming into products through chemical bonds breaking and forming. The equation includes the chemical formulas of the reactants before the reaction arrow and the products after, indicating a rearrangement of atoms and a change in chemical structure. Balancing the equation ensures that mass is conserved, further confirming a chemical change has taken place.
What shows changes that take place during a chemical reaction?
Evidence of a chemical reaction includes color change, formation of precipitate, evolution of gas, and changes in temperature. These changes can indicate that new substances are being formed through the rearrangement of atoms.
How does a chemical equation show that a chemical reaction has occurred?
A chemical equation shows that chemical reaction has occurred as new substances have been formed from the reagents. A chemical equation has two sides before reaction and after reaction, if there is any change from the before reaction side to the after reaction side, it indicates that a chemical reaction has just occurred.
What shows a reaction in a solution consisting of only those particles directly involved in the chemical change?
A net ionic equation shows a reaction in a solution by only including the ions that participate in the chemical change, disregarding spectator ions that do not react. This allows for a clearer representation of the actual chemical reaction occurring in the solution.
What is a bet ionic equation?
A net ionic equation is a chemical equation that shows only the ions that participate in a reaction, excluding spectator ions that do not undergo a chemical change. By focusing on the ions involved in the reaction, net ionic equations provide a clearer representation of the key chemical process taking place.
What shows the relationship between the reactants and products in a chemical reaction?
the coefficients of a balanced reaction
What is the significance of a negative enthalpy change in a chemical reaction?
A negative enthalpy change in a chemical reaction indicates that the reaction is exothermic, meaning it releases heat energy to the surroundings. This is significant because it shows that the reaction is giving off energy rather than absorbing it, which can affect the temperature and overall energy balance of the system.
Is bananas turning black if you leave them in a warm cupboard for a week a chemical reaction and why?
Yes, it is a chemical reaction, because the colour of the banana has changed, which shows that a chemical reaction has taken place. Also, if the banana has gone black and turned bad, you can't change it back to it's original form, which proves that it is a chemical reaction and not a physical reaction. Remember - A chemical reaction has definitely taken place if : It's colour has changed A gas is given off There are energy changes Or, it can't be changed back to what it used to be! :) Hope this helps!!
What is indicated by formation of gas precipitate release of heat or a color change is?
The formation of gas indicates a chemical reaction producing a gas as a product. Precipitate formation shows the formation of a solid substance from a chemical reaction. Release of heat indicates an exothermic reaction, which releases energy in the form of heat. A color change is indicative of a chemical change where the substances involved absorb or emit light in different parts of the spectrum.
What does the net ionic equation show about a reaction?
The net ionic equation shows the chemical species that are directly involved in the reaction, excluding spectator ions that do not participate in the actual chemical change. It focuses on the ions or compounds that undergo a change in oxidation state or bonding during the reaction, providing a clearer picture of the essential chemical processes occurring.
