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How can one lower a crystal in a beaker of water using a test tube?
Put a glass tube into the beaker of water so that it touches the bottom, then drop the crystal down the tube and put your finger over the top of the, then remove the tube gently, leaving the crystal behind in the beaker. After that laugh maniacally at the test tube and you might become an evil genius! Hope this helps! :)
What is the colour of a leaf when the chlorophyll is removed?
As we know, chlorophyll is what causes the leaf to appear green. From what I know there is a very specific way to extract chlorophyll from leaves. 1. Boil the leaf to kill the cells and arrest all the chemical activity, this also makes it permeable to alcohol and iodine later on. 2. Submerge the leaf in alcohol (ethanol) which is kept in test tube. 3. Put the test tube into the boiling beaker in step one so the alcohol is boiled alone with the leaf in it. The chlorophyll should be extracted as the alcohol turn green. As for the leafs, they usually only appears lighter than it is originally is, which is VERY light green. I have never seen a leaf with absolutely no chlorophyll so can't tell you right here. WARNING: Alcohol in gas form is highly flammable.
How is smelling the contents of a test tube done safely?
Never put your face directly over the test tube. Use your hand to fan the air above the test tube toward you and smell that way.
What is the result of the Test for the presence of starch in a leaf?
Method Half fill a beaker with boiling water and add a large test tube that is a quarter full of ethanol. Allow the ethanol to come to the boil. Do not heat the ethanol in a Bunsen burner flame. This is not safe because ethanol is highly flammable. Take a leaf that has been sitting in good light for at least a few days, and soften on the boiling water for ten seconds or so. Then add to the ethanol and allow to boil for about a minute until all the colour disappears from the leaf. Remove the leaf from the ethanol. Put it back in the hot water to soften for 10 seconds. Spread the leaf out on a white tile and use the iodine solution to test for starch A blue-black colour indicates starch is present. This experiment can be repeated with leaves that have been left in the dark. or have been deprived of carbon dioxide.
How can you test to see if there is oxygen in a test tube?
Light a splint on fire, and then blow the flame out. You want your splint to be glowing red. Then, simply put the splint into the mouth of the the test tube, and if your splint re-lights up into a flame, you'll know it's oxygen gas.
How can you test a plant leaf for photosynthesis?
leave it in sunlight and water it, use a starch indicator to test presence of starch, or put an aquatic plant in a beaker of water and put a test tube upside down in the beaker surrounding the plant and leave it in sunlight and you should eventually see oxygen bubbles start to form up from the plant through the test tube
How can one lower a crystal in a beaker of water using a test tube?
Put a glass tube into the beaker of water so that it touches the bottom, then drop the crystal down the tube and put your finger over the top of the, then remove the tube gently, leaving the crystal behind in the beaker. After that laugh maniacally at the test tube and you might become an evil genius! Hope this helps! :)
How do you do the limewater test?
Put the solution your testing CO2 for into a boiling tube. Put a plug with a tube leading out of it in the top of the boiling tube. Place the other end of the plugs tube into a beaker full of limewater. If carbon dioxide is present, the limewater will turn cloudy.
How do you test hydrochloric acid and magnesium metal?
you put the hydrochloric acid in a test tube then you put the magnesium metal in the test tube with the hydrochloric acid in it then you put a cork on the top ofthe test tube and watch it fizz.
What is the difference between a test tube holder and a test tube rack?
No. A ringstand is a stand with a base with a large pole sticking out of it. that you can attach rings to. A wire mesh is usually placed on the ring for setting a beaker to be heated. A test tube clamp can be attached to the ring stand to hold a test tube, for say, heating it in a hot water bath.
Are there any liquids which would change to gas if placed in a tube and put into a beaker of boiling water?
yes
What is the colour of a leaf when the chlorophyll is removed?
As we know, chlorophyll is what causes the leaf to appear green. From what I know there is a very specific way to extract chlorophyll from leaves. 1. Boil the leaf to kill the cells and arrest all the chemical activity, this also makes it permeable to alcohol and iodine later on. 2. Submerge the leaf in alcohol (ethanol) which is kept in test tube. 3. Put the test tube into the boiling beaker in step one so the alcohol is boiled alone with the leaf in it. The chlorophyll should be extracted as the alcohol turn green. As for the leafs, they usually only appears lighter than it is originally is, which is VERY light green. I have never seen a leaf with absolutely no chlorophyll so can't tell you right here. WARNING: Alcohol in gas form is highly flammable.
How do you put Hydrogen in a Test tube?
in other words the squeeky pop test
How do you carry out to test for presence of starch?
Half fill a beaker with boiling water and add a large test tube that is a quarter full of ethanol. Allow the ethanol to come to a boil. Do not heat the ethanol in a Bunsen burner flame. This is not safe because ethanol is highly flammable. Take a leaf that has been sitting in good light for at least a few days, and soften in the boiling water for ten seconds or so. Then add to the ethanol, and allow to boil for about a minute until all the color disappears from the leaf. Remove the leaf from the ethanol. Put it back in the hot water to soften for 10 seconds. Spread the leaf out on a white tile and use the iodine solution to test for starch a blue-black color indicates starch is present.
How do you create life in test tube?
Fill test tube with water. Put cap on test tube. Leave alone for 1 1/2 months. Come back. You have created algae/mold.
How is smelling the contents of a test tube done safely?
Never put your face directly over the test tube. Use your hand to fan the air above the test tube toward you and smell that way.
A piece of rubber put on to the opening of a test tube?
its a bung
