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Why does the hot water turn purple when poured over red cabbage leaves?
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What are some cool science experiments?
Boil cabbage in acetone, the purple pigments from the cabbage transfer to the water, therefor the water becomes purple&tge cabbage turns white, This also works for leaves boiled in alcohol. Remember:wear goggles(;
What is the lowest costing pH meter?
red cabbage is a good universal indicator you need a red cabbage hot water and a pestle and mortar put hot water into the mortar and crush the red cabbage leaves with the pestle the water should turn purple. your own universal indicator!
What is red cabbage powder?
Red cabbage powder is made by extracting the flavin pigment from red cabbage leaves. This is usually done by boiling in an ethanol and water mixture, resulting in a deep-red/purple solution. This solution is then evaporated under reduced pressure and heat to yield a red/purple powder. The powder smells like cabbage, is soluble in water, and can be used as a dye or acid/base indicator. Many food manufacturers use red cabbage dye as a more 'natural' alternative to synthetic dyes, which are all suspected carcinogens.
Why are the leaves on the inside of a cabbage paler?
because they have less water
Why do you use hot water when making indicator from red cabbage leaves?
because you get more colour
Why does red cabbage powder and water turn purple when citric acid is added?
Red cabbage powder is a natural acid-base indicator. It contains a compound that changes color when exposed to varying concentrations of hydrogen and hydroxide ions. When citric acid and water are added to the powder, the hydrogen ions from the acid interact with a chemical in the red cabbage powder, giving it a purple color.
Why does cabbage juice work as an indicator?
put small pieces of purple cabbage in hot water and stir it and leave it for 20 min and take only water. if indicator turns substance red it is acidic ,if blue then basic if no change then neutral
What do you do with a baby turtle found in a pool?
What you do: You simply, feed it, and care for it, feed it cabbage leaves and make sure it has water to drink, simple!!
Why should a minimal amount of water be used to cover the red cabbage leaves?
because it will yield a higher concentration of indicator molecules
Why does water go down when poured?
gravity pulls the water down when it is poured
How do separate red cabbage from cabbage water?
Using a slotted spoon, lift the cabbage from the water, allowing the water to drain through the slots.
How do you make an indicator?
If you want to make a purple indicator, just cut up some purple cabbage and cook it in boiling water for about 5-10 minutes or until it turns purple. When you place another substance in it it will turn pink if it is acidic, and if if turns a green it is a base...... if it stays purple the substance is neutral.
