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Simply put, the products are a different color from the reactants. For example, when copper reacts with a silver nitrate solution it turns the solution from colorless to blue. This is because while the silver ions (Ag+) do not affect the solution while the copper ions (Cu2+) released by the reaction are blue in the presence of water.
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How can you change the color of a chemical?
There are many different chemical reactions which affect the color of chemicals that undergo those reactions.
What are characteristics do all chemical changes have?
All chemical reactions cause the change of color and the Change in temperature. Chemical reactions also have the characteristic of releasing gas.
How do you know if a chemical reactions has taken place?
Signs of chemical reactions may be: - Gas release - Formation of a precipitate - Change of color - Change of odor - Change of pH - Change of aspect - Change of viscosity - Change of the temperature - Visible formation of new compounds
Are the clues that indicate a chemical change always reliable?
Some indicators of a chemical reaction are:- change of color- change of odor- release of a gas- change of the temperature- change of the viscosity- formation of a precipitate- change of general appearance- possible explosion - possible chemiluminescence - formation of new compounds
How can you tell a chemicall reaction has happened?
The most obvious event to look for to indicate a chemical reaction is the production of heat. All chemical reactions produce heat.
How can you change the color of a chemical?
There are many different chemical reactions which affect the color of chemicals that undergo those reactions.
What are characteristics do all chemical changes have?
All chemical reactions cause the change of color and the Change in temperature. Chemical reactions also have the characteristic of releasing gas.
What are sings of a chemical reaction?
Chemical reactions can be recognized by many things, but mainly include a change in color, a variation in temperature, change in shape, or the creation of bubbles.
How do you know if a chemical reactions has taken place?
Signs of chemical reactions may be: - Gas release - Formation of a precipitate - Change of color - Change of odor - Change of pH - Change of aspect - Change of viscosity - Change of the temperature - Visible formation of new compounds
What are the sings of chemical reactions?
The signs of a chemical reaction include change in temperature, change in color, formation of gas, formation of a precipitate, disappearance of a solid, formation of a new odor.
Are the clues that indicate a chemical change always reliable?
Some indicators of a chemical reaction are:- change of color- change of odor- release of a gas- change of the temperature- change of the viscosity- formation of a precipitate- change of general appearance- possible explosion - possible chemiluminescence - formation of new compounds
How can you be certain that a chemical change has occurred?
Signs of chemical reactions may be: - Gas release - Formation of a precipitate - Change of color - Change of odor - Change of pH - Change of aspect - Change of viscosity - Change of the temperature - Visible formation of new compounds
How can you tell a chemicall reaction has happened?
The most obvious event to look for to indicate a chemical reaction is the production of heat. All chemical reactions produce heat.
Which item is a sign of chemical change?
Signs of chemical reactions may be: - Gas release - Formation of a precipitate - Change of color - Change of odor - Change of pH - Change of aspect - Change of viscosity - Change of the temperature - Visible formation of new compounds.
Why the signs of reactions for chemical reactions may occur?
Some indicators of a chemical reaction are:- formation of new compounds - change of color- change of odor- release of a gas- change of the temperature (absorption or release)- change of the viscosity- formation of a precipitate- change of general appearance- possible explosion - sometimes a sound is produced - possible chemiluminescence
What are the five indications of chemical reactions?
color change release gas release heat form a whole new substance precipitation
When lead nitrate and potassium nitrate solutions are mix why is it changes colour immediately?
the colors will immediately change because it formed a chemical reaction. when two pure substances u know a reaction is going to occur by the temperature changing, change of color (why it turned yellow), produce of gas and produce of precipitation (when it slowly changed into a powder. not all of the have to occur but if u notice that one is that is when a chemical reactions is happening
