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Is it true or false that indications of a chemical change include light heat and gas production?
Wiki User
∙ 13y ago
True. Chemical changes can vary from colour change to gas production.
Wiki User
∙ 13y ago
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How can you be sure that at least one chemical change has occurred?
Evidence that a chemical reaction has taken place usually include appearance of a precipitate, change in color, or production of a gas.
List 5 indications of a chemical change?
If an object has changed its chemical composition it has been through a chemical change. If you can't reverse what has been done in any way (things like burning, mixing, rusting) it's a chemical change
What does not signal a chemical change color change or production of light and heat or production of gas or change in state?
color change
What takes place when a substance undergoes a chemical change?
well the way i learned it, if you cannot bring something back to its original state its a chemical change. if you can, then its a physical change.For example-burning paper is a chemical change because you cannot bring that piece of paper back from the ashes.wrinkling paper is a physical change because you can unwrinkle the paper and bring it back to its original state.
Which are 4 indications of chemical reaction has occurred?
The indicators of a chemical reaction are :- 1. Change in colour 2. Change in temperature 3. Evolution of a gas 4. Formation of a precipitate
What clues can you use to identify a chemical change?
Characteristics of a chemical change can include a temperature change, a color change, the production of bubbles, the production of a precipitate, and a smell.
Do chemical change include light heat and gas production yes or no?
Yes
How can you be sure that at least one chemical change has occurred?
Evidence that a chemical reaction has taken place usually include appearance of a precipitate, change in color, or production of a gas.
What of chemical changes can include production of bubbles heat light smoke sounds or color change?
hi
Is production of heat or light a physical or chemical change?
Its a chemical change hottie
List 5 indications of a chemical change?
If an object has changed its chemical composition it has been through a chemical change. If you can't reverse what has been done in any way (things like burning, mixing, rusting) it's a chemical change
What does not signal a chemical change color change or production of light and heat or production of gas or change in state?
color change
What takes place when a substance undergoes a chemical change?
well the way i learned it, if you cannot bring something back to its original state its a chemical change. if you can, then its a physical change.For example-burning paper is a chemical change because you cannot bring that piece of paper back from the ashes.wrinkling paper is a physical change because you can unwrinkle the paper and bring it back to its original state.
Is production of light by a lamp physicalnor chemicaln change?
The production of light is chemical change. I is done by someone.
How can a chemical reaction be observed?
Some indications may be: - release of a gas - formation of a precipitate - change of color - change of odor - change of pH - change of viscosity - change of the aspect - etc.
Is the production of light a chemical or physical change?
physical
Which are 4 indications of chemical reaction has occurred?
The indicators of a chemical reaction are :- 1. Change in colour 2. Change in temperature 3. Evolution of a gas 4. Formation of a precipitate
