0
When iodine solution is mixed with an unknown sample of food the mixture turns black this indicates the present of?
Wiki User
∙ 8y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
When iodine solution is mixed with an unknown sample of food the mixture turn blue black this color change indicates the presence of?
An enzyme.
What is the purpose of adding an indicator to an unknown solution?
Indicators contain chemicals that will react with certain substances. If that substance is present in your unknown solution, a reaction will occur. If no reaction occurs, then that substance is not present in your solution
If solid material settles out of a mixture over time the unknown mixture is likely a?
suspension
Is gravel a pure substance or a mixture?
Geavel is not pure, it is an undescriptable mixture of unknown composition
How can you identify Sulphate anions in a unknown solution?
Dip a copper coin in that unknown solution And make that solution slightly acidic. After about one hour, take out the copper coin and if there are green colours deposits then there is sulphate, otherwise not.
When iodine solution is mixed with an unknown sample of food the mixture turn blue black this color change indicates the presence of?
An enzyme.
What is the purpose of adding an indicator to an unknown solution?
Indicators contain chemicals that will react with certain substances. If that substance is present in your unknown solution, a reaction will occur. If no reaction occurs, then that substance is not present in your solution
Is sodium hydroxide unknown solution?
Sodium hydroxide is not an unknown solution.
How can I find out whether a unknown mixture has protein in it?
The most common method is the biuret test: in the presence of a copper(II) solution and NaOH the sample become violet.
When biuret reagent is added to an unknown colorless solution the solution turns light purple. this indicates the presence of which molecules?
process that release energy by breaking down food molecules in the presence of oxygen
Which describes mendeleevs use of the term ekaaluminum?
A mixture of aluminum and an unknown element.
Is iron sulphide a compound or a mixture?
unknown
If solid material settles out of a mixture over time the unknown mixture is likely a?
suspension
Is gravel a pure substance or a mixture?
Geavel is not pure, it is an undescriptable mixture of unknown composition
What do you use to solve for the unknown variable?
Equations are used to find the solution to the unknown variable.
What is the pH if solution makes phenolphthalein stay clear?
your unknown solution made methyl red turn yellow. it also made phenolphthalein stay clear. what rang of pH does your unknown solution have?
What is bromine and carbon tetrachloride?
Bromine in carbon tetrachloride is a brown-colored solution and used as a chemical test. When drops of bromine/carbon tetrachloride are added to a solution containing an unknown compound and the brown-colored bromine solution disappears, that means that the unknown compound contains carbon-carbon double bonds (since it absorbed the bromine solution). On the other hand, if the brown-colored bromine solution doesn't disappear then it means that no carbon double bonds are present. This is called a "Bromine Test."
