They are called indicators.
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The Sumerians used a plant called papyrus to weave paper. The Sumerians used the paper to record stuff such as records and letters. The word paper actually comes from papyrus
You will need 5 copper coins witch are pennies and 5 non-copper coins witch are dimes, pieces of paper towel and lemon juice. First you take a piece of paper towel and dip it in lemon juice. place it on top of a copper coin. then you take a non-copper coin and place it on top of the paper towel. After, you take a piece of paper towel and put it on top of your non-copper coin. Do the same thing as a pattern until you have used 5 copper coins and 5 non-copper coins. Make sure you have a piece of paper towel in between each coin. Finally, wet each finger tip and hold the ends of your battery. Do you feel a BZZ?
There could well be more than one legitimate answer, so here are a couple. Music paper that composers use to write down the music is called "staff paper". It is just paper with several blank staffs on it. The composer adds everything, including the notes, clefs, time signatures, dynamics, etc. If the music is already on the paper and is meant to be read by a musician, singer, conductor, etc. it is called "sheet music". Interestingly, only recently has sheet music transferred over into the digital age. Now sheet music can be read from digital music stands.
It depends. Is it in a box? othrwise probably not much. These dolls on eBay gor for between 3 and 20 dollars depending on completeness of the outfit, cleanliness and the paper work is not as important because colectors often buy birthcertificate lots.....and use those instead. good luck!
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Red cabbage juice and litmus paper both serve as pH indicators, but they have different advantages. Red cabbage juice is natural, easy to prepare, and can provide a color spectrum for various pH levels. However, litmus paper is more standardized and offers quicker, more precise results for determining acidity or alkalinity. Ultimately, the choice depends on the context and the level of accuracy required.
You will have made a pH indicator. Just like litmus paper.
Litmus paper, phenolphthalein, and red cabbage juice are substances that change color in response to changes in acidity or basicity. Litmus paper turns red in acid and blue in base, phenolphthalein is colorless in acid and pink in base, and red cabbage juice turns red in acid and blue in base.
You can use litmus paper or purple cabbage juice to test if a substance is acidic or not. Blue litmus paper turns red under acidic conditions. If you search 'litmus paper chart' online you can find some pretty good charts to find just how acid the substance is.
Potato juice is typically neutral or slightly acidic, so if you test it with litmus paper, blue litmus paper will remain blue, and red litmus paper will remain red. This indicates that potato juice does not change the color of either type of litmus paper, reflecting its neutral pH.
Blue litmus paper would turn red in orange juice.
Lemon juice is an acid therefore, it turns blue litmus paper red and red litmus paper remains red
Litmus paper would turn red if apricot juice, which is acidic, was dropped on it. This is because litmus paper turns red in the presence of an acid.
Litmus paper is used to test the acidity or alkalinity of a solution. Tomato juice is acidic, so when litmus paper is dipped into it, blue litmus paper will turn red, indicating the acidic nature of the juice. Red litmus paper will remain red since it is already acidic.
Lemon juice is an acid and blue litmus paper turns red when dipped in an acidic liquid.