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PUT TWIGS INTO DIFFERENT SOLUTIONS Today we are going to put twigs with leaves on them into some different solutions. Some will be heated, and some will be cooled. One twig will be in plain water under normal con- ditions, for a control. We have nine jars and nine twigs with leaves on them. Our twigs are from a red maple tree, a sugar maple tree, a poplar tree, or an oak tree. (We must to use what we have, de- pending on the area where we live.) The twigs should be broken off rather than cut from the tree, so they will take in more of the solutions. Earlier today, I made "simple syrup" by boiling water with a little sugar. It has been cooling, and is now at room temperature. I also boiled some water with salt, so the salt would dissolve evenly in the water. Into three jars, we will put plain water. Into another two jars, we will put salt water; the third set of jars will have sugar water; and the fourth set of jars will have a mixture of water and vinegar. We will label the jars in a way that will tell us what solution is in them, and if they will be heated or cooled. For example, one jar would have a label that said, "Sugar - warm," and the other would say, "Sugar - cool." (Wouldn't it be awful if the leaves in the sugar jars got cavities?) Into each jar, we will put a twig. One jar with plain water will be placed on the counter where the temperature will be normal. This jar will be labeled, "Control." One jar of each set will go into the refrigerator, and the remaining jars will be placed near the heater. We'll let them stay there overnight, and when we come in in the morning, we can see if there is any difference in the appearance of the leaves. We will compare them to each other, and we will compare all of them to the "Control" leaves. Then we will know what leaves on twigs like to drink.  Any problems with this page? Send URL to
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