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THIS WAS MY METHOD FOR MY AS Biology PRACTICAL PLAN -Add sodium citrate (1 parts to 10 parts milk) to the milk to remove calcium ions already in the milk -Add calcium chloride of different concentrations (thus different no. of calcium ions) to milk samples. -Heat to 37 degrees C in a water bath -Add rennin (an enzyme which initiates coagulation) -Observe coagulation of milk by observing the presence of "flecks" when you dip a microscope slide into the milk
What else can I help you with?
Would a flame test work to identify the specific substances if contained multiple cations?
In a flame test, different cations produce characteristic colored flames, allowing for identification of specific substances even if multiple cations are present. However, precise identification may be challenging if the cations produce similar colored flames that are difficult to distinguish. Additional tests or methods may be required for accurate identification.
Why are the reagents used to test for cations usually alkali metal salts or ammonium salts rather than salts of other metals?
Alkali metal salts and ammonium salts are used to test for cations because they are highly soluble in water and do not form insoluble precipitates with common anions. This allows for a clear identification of the cations present in a solution. Other metal salts may form insoluble precipitates with anions, making it difficult to detect the cations accurately.
How can you use light emissions to identify a substance that you suspect may contains cations?
You can use a technique called flame test where the substance is heated in a flame. The cations present in the substance will emit distinct colors of light based on their unique electronic configurations. By comparing the observed color with a reference chart of known cation emissions, you can identify the cations present in the substance.
Do alkali metals generally make anions or cations?
Alkali metals generally form cations by losing their outermost electron to achieve a stable electron configuration.
Are cations positive ions that are nonmetals?
Cations are electrically positive ions
Is a flame test for cations?
yes, for cations
What is a cation test?
Testing for cations is a test used in chemistry to identify metal or metal ions (cations) found in compounds. ... This test uses sodium hydroxide or aqueous ammonia to test and identify metal ions by the precipitation formed.
Would a flame test work to identify the specific substances if contained multiple cations?
In a flame test, different cations produce characteristic colored flames, allowing for identification of specific substances even if multiple cations are present. However, precise identification may be challenging if the cations produce similar colored flames that are difficult to distinguish. Additional tests or methods may be required for accurate identification.
Why are the reagents used to test for cations usually alkali metal salts or ammonium salts rather than salts of other metals?
Alkali metal salts and ammonium salts are used to test for cations because they are highly soluble in water and do not form insoluble precipitates with common anions. This allows for a clear identification of the cations present in a solution. Other metal salts may form insoluble precipitates with anions, making it difficult to detect the cations accurately.
What charge do cations have?
Cations have a positive charge.
How can you use light emissions to identify a substance that you suspect may contains cations?
You can use a technique called flame test where the substance is heated in a flame. The cations present in the substance will emit distinct colors of light based on their unique electronic configurations. By comparing the observed color with a reference chart of known cation emissions, you can identify the cations present in the substance.
Do alkali metals generally make anions or cations?
Alkali metals generally form cations by losing their outermost electron to achieve a stable electron configuration.
What color flame test does the iodide solution give in flame test?
It is not the anions (e.g. iodide) that are responsible for the flame test color, rather the cations such as sodium ion, potassium ion and calcium ion give you different colors.
Are cations positive ions that are nonmetals?
Cations are electrically positive ions
What kinds of elements forms cations?
Metals generally form cations
Are cations positively or negatively charged?
Cations are positively charged ions.
Are cations metals?
Cations are positively charged ions that can be formed by both metals and non-metals. However, cations are more commonly associated with metals because metals tend to lose electrons to form positive ions.
