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Some physical signs are color change, bubbling, and rapid temperature reduction.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoformation of a precipitate
formation of a gas
change in color
change in temperature
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Is boiling potatoes a chemical or physical change?
Physical, because it doesn't change chemical make up it just changes the appearance and texture
Is converting iron to a steel alloy a physical change?
It is a physical change as an alloy is a solid solution made from various metals. As you can still separate these different metals after the alloy is made it is a physical change and not a chemical change.
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 is the relationship between the temperature and the rate of chemical?
Heat energy is necessary for some chemical reactions to occur. Some chemical reactions are endothermic meaning they require or absorb energy for a chemical reaction to occur. Other chemical reaction are exothermic meaning they release energy when the chemical reaction takes place..
What is dark violet iodine crystals.. is it a chemical change or not?
In order for something to be considered a change some sort of change must occur. A crystal is an object, not a type of change. Dark violet iodine crystals are pieces of relatively pure elemental iodine.
What are some evidences of a chemical reation taking place?
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
Is a cooked hot dog physical or chemical change?
CHEMICAL:)
What are the most common evidences of chemical reactions?
Some signs (or evidence) of chemical change are: a gas is produced, the temperature changes, a substance disappears, a solid is formed a colour change occurs, a new odour is produced.
What are the evidences of chemical change and which is the most important?
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- change of the viscosity- formation of a precipitate- change of general appearance- possible explosion- possible chemiluminescence
What are the evidences a chemical change has taken place?
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 kind evidences you look for abour whether a chemical reaction?
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 you cook an egg do you think a chemical change occur?
Yes. Some proteins fall apart causing the structure (the look and feel) of the egg to change.
Is boiling potatoes a chemical or physical change?
Physical, because it doesn't change chemical make up it just changes the appearance and texture
Is converting iron to a steel alloy a physical change?
It is a physical change as an alloy is a solid solution made from various metals. As you can still separate these different metals after the alloy is made it is a physical change and not a chemical change.
What is the difference between disintegration and decomposition of rock?
Disintegration is fragmentation of rock and there is no chemical change during or after this process. Decomposition is resulting in the destruction of some or all of the unstable minerals and thus chemical change occur and new minerals are formed.
What are some evidences of evolution?
the fossil record of change in earlier speciesthe chemical and anatomical similarities of related life formsthe geographic distribution of related speciesthe recorded genetic changes in living organisms over many generations
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.
