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-Colour
-Temperature
-Light
-Gas produced (Bubbles)
-Precipitate
-Hard to reverse
Examples: Cooking an egg: This is a chemical reaction for several reasons. As you cook an egg the temperature increases, also the colour of the whites change, and it is very hard to reverse.
Melting a block of ice: This would not be a chemical change because it is rather known as a Physical Change. A physical change includes signs as decrease in size or change in state. In this situation the block of ice is going from a solid, to a liquid.
What else can I help you with?
In which situation is a chemical reaction occurring?
A chemical reaction occurs when there is a change in the chemical composition of substances involved, resulting in the formation of new substances with different properties. Signs of a chemical reaction include the release of heat or light, formation of a precipitate, color change, or production of gas.
The changes that are visible during a chemical reaction are signs that the?
The changes that are visible during a chemical reaction are signs that the reactants are undergoing a transformation into one or more new substances with different properties. This transformation involves the breaking and forming of chemical bonds, resulting in the manifestation of various observable changes such as color, temperature, gas production, or precipitate formation.
If one substance changes color is it a chemical reaction?
Not necessarily. Things sometimes change colors during a chemical reaction, but a color change is not sufficient evidence of a chemical reaction. You can add drink mix to water and the water turns colors, but it is not a chemical reaction, just a mixture.
List three signs that could make you think a chemical reaction might be taking place?
Formation of bubbles or gas: Gas evolution can indicate a chemical reaction is occurring. Change in color: A sudden change in color could be a sign of a reaction, such as a shift from clear to cloudy. Temperature change: If the reaction generates heat (exothermic) or absorbs heat (endothermic), it can be an indication that a chemical reaction is taking place.
What are the signs of physical change from a chemical change?
Signs of a chemical change include the formation of a new substance, a change in color, production of gas or bubbles, release of heat or light, and a change in odor. These changes are not easily reversible and often involve the rearrangement of atoms.
What are the 5 signs of a chemical changing?
Five signs of Chemical changes are... 1. light is emitted 2. sound 3. new smell 4. bubbles 5. changes in density There are more than five signs, but theses are the ones I can think of right now.
Can a chemical reaction cause heat?
Yes, the signs of a chemical reaction are: gas, precipitation, heat, color change
Is a chemical reaction (Hint Think of the table with signs of a chemical reaction.)?
The question does not have the enough required information that is required to accurately answer it.
What is a chemical reaction Hint Think of the table with signs of a chemical reaction?
The question does not have the enough required information that is required to accurately answer it.
What are signs of a chemical reaction?
Some signs could be: *solids forming *bubbles *color change *temp. change
If five atoms of hydrogen are reactants in a chemical reaction then how many atoms of hydrogen will be found in the products of that reaction?
If five atoms of hydrogen are reactants in a chemical reaction, typically all five atoms will be found in the products unless some sort of splitting or rearrangement of atoms occurs during the reaction. It follows the principle of conservation of mass, meaning atoms cannot be created or destroyed in a chemical reaction.
What are the signs needed in chemical reaction?
color changeformation of a precipitatetemperature changeformation of gas bubbles
What are the five ways to know that chemical reaction happened?
don't know
The changes that are visible during a chemical reaction are signs that the nuclei in the reactants have been rearranged.?
False.
How could you visually tell that something is having a chemical reaction?
If you see fizzing, bubbling, or a change in color. They're good signs of chemical reactions you can see. Also, smoke. If you see smoke, you probably have a chemical reaction.
In which situation is a chemical reaction occurring?
A chemical reaction occurs when there is a change in the chemical composition of substances involved, resulting in the formation of new substances with different properties. Signs of a chemical reaction include the release of heat or light, formation of a precipitate, color change, or production of gas.
The changes that are visible during a chemical reaction are signs that the?
The changes that are visible during a chemical reaction are signs that the reactants are undergoing a transformation into one or more new substances with different properties. This transformation involves the breaking and forming of chemical bonds, resulting in the manifestation of various observable changes such as color, temperature, gas production, or precipitate formation.
