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Essentially, patina is oxidation-- rust.
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∙ 11y ago
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What are 3 list of chemical change?
You know a chemical change happened if: -A change in color -Formation of a precipate (a solid) -Formation of a gas
When A bronze statue develops a green coating (patina) over time is physical change or chemical?
It is chemical. The copper in bronze turns green when it oxidizes.
Is milk to yogurt a chemical or physical change?
Chemical change, sourness is due to formation of lactic acid
Is milk thickening a chemical or physical change?
The thickening is caused by the formation of a precipitate. The formation of a precipitate is a chemical reaction.
How can you be certain that a chemical change has occurred?
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
Is the formation of gas a chemical change or physical change?
Chemical change
Is a chemical bond a physical change?
The formation of chemical bonds is a chemical change.
What are 3 list of chemical change?
You know a chemical change happened if: -A change in color -Formation of a precipate (a solid) -Formation of a gas
Is chemicals bonding a physical or chemical change?
The formation of chemical bonds is a chemical change.
Formation of ethanol from glucose by yeast a chemical or physical change?
A chemical change
Is oxide formation a physical change?
No. It is a chemical change.
What identifies a chemical change has taken place?
Signs that a chemical change has taken place include the formation of a gas, the formation of a precipitate, a change in temperature, and a change in color.
What is a description of chemical changes?
Chemical change is any change that results in the formation of new chemical substances.
Is formation of table salt a physical or chemical change?
Formation of NaCl from chlorine and sodium is a chemical process.
How can you know this is a chemical reaction?
Evidence of a chemical reaction include the following: formation of a precipitate formation of a gas change in temperature change in color
What are the sings of chemical reactions?
The signs of a chemical reaction include change in temperature, change in color, formation of gas, formation of a precipitate, disappearance of a solid, formation of a new odor.
When A bronze statue develops a green coating (patina) over time is physical change or chemical?
It is chemical. The copper in bronze turns green when it oxidizes.
