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A change in pH or conductivity will always hint to a chemical change. Also less technical signs can be a change in volume or color
What else can I help you with?
Are a sign that a chemical change has occurred?
gain or loss of heat to the environment
What is a sign that a chemiacl change occurred air bubbles or broken pieces?
air bubbles is a sign that a chemical change has occured
What is a sign that a chemical change has occurred smoke broken pieces change in shape or change in state?
The production of smoke from something burning would be a sign of a chemical change. Broken pieces, change in shape, or change in state are all physical changes.
Is broken pieces a sign that a chemical change has occured?
Not really. A broken glass is still glass; no chemical change has occurred. But it is physically different, so it is better to say a physical change happened.
What is a sign that a chemical change has definitely occurred during his experiment?
Some signs for a chemical reaction are: change of the color, release of a gas, change of the temperature, formation of a precipitate, pH modification, viscosity variation, a change of the odor or taste, etc.
What is a sign that chemical change has occurred?
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
When a substance gives off or absorbs heat is that a sign that describes a sign of a chemical change occurring?
Yes, if a substance gives off or absorbs heat, it could be a sign that a chemical change is occurring. This process is known as an exothermic or endothermic reaction, respectively, which are common indicators of chemical reactions.
Is changing of color a sign of chemical change?
The change of color may be a sign of a chemical reaction.
What is good sign that a chemical change has occurred?
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
What are some of the signs that a chemical change has occurred?
Some signs that a chemical change has occurred include a change in color, formation of a precipitate (solid), release of gas bubbles, or a change in temperature. Chemical changes involve the breaking and forming of chemical bonds, resulting in new substances being formed.
Why is only one sign of a chemical change not enough to guarantee a chemical change has occurred?
To avoid a confusion with other processes. 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 does a chemical change in temperature indicate that a chemical reaction may have occurred?
A change of temperature implies that some energy has been transfered or used. Since chemical reactions either require or release energy to occur, the environment may change temperature as the substances react.
