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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.
When you mix two substances in a beaker and expect them to undergo a chemical change the temperature of the mixture does not change has a chemical change occurred?
Yes, a chemical change can still occur without a noticeable change in temperature. Some chemical reactions are endothermic (absorb heat) and others are exothermic (release heat), so observing a change in temperature is not always a reliable indicator of a chemical change taking place. Other signs to look for include color changes, gas production, formation of a precipitate, or the release of light.
Chemical change good or bad?
Chemical changes can be both good and bad. Some chemical changes are necessary for life to exist, such as in the process of digestion. However, some chemical changes can be harmful, such as those that occur in pollution or the degradation of materials.
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 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 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 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 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 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 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
When you mix two substances in a beaker and expect them to undergo a chemical change the temperature of the mixture does not change has a chemical change occurred?
Yes, a chemical change can still occur without a noticeable change in temperature. Some chemical reactions are endothermic (absorb heat) and others are exothermic (release heat), so observing a change in temperature is not always a reliable indicator of a chemical change taking place. Other signs to look for include color changes, gas production, formation of a precipitate, or the release of light.
Chemical change good or bad?
Chemical changes can be both good and bad. Some chemical changes are necessary for life to exist, such as in the process of digestion. However, some chemical changes can be harmful, such as those that occur in pollution or the degradation of materials.
