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How get glass stopper out of a glass bottle?
Grease the top of the bottle!
When glass stopper in a bottle is stuck it may sometimes be loosened by holding the neck of the bottle under a hot water faucet explain the physical principle responsible for this observed phenomenon?
With a few exceptions (notably melting ice) objects expand when heated. If you run hot water on a bottle neck, the heat is applied directly to the bottle and only indirectly to the stopper inside the bottle, so the bottle heats first, and thereby expands sooner than the stopper does. An expanded bottle will exert less pressure on the stopper.
Why is it not advisable to use a ground glass stopper for a reagent bottle containing sodium hydroxide solution?
Over time, the sodium hydroxide will react with the smidges of carbon dioxide in air to produce sodium carbonate, the white, crusty powder that you find around the rim of plastic capped stock bottles (for example). This powder will either prevent the ground glass stopper from sealing properly and exposing the contents to more air, or will in fact cement the ground glass stopper in the bottle, and make it impossible to remove.
What is ground glass?
It can either be glass that has been ground to a powder, or two glass surfaces that have been ground to fit together precisely, such as a glass stopper in a glass chemical bottle.
What is the correct method of removing a glass stopper?
To remove a glass stopper, start by gently tapping the sides with a rubber mallet to loosen it. Then, carefully twist the stopper while pulling it upwards to remove it from the bottle. If the stopper is still stuck, try using hot water to expand the glass before attempting to remove it again.
How can I make a potion bottle?
To make a potion bottle, you can start by finding a glass bottle with a cork or stopper. Clean the bottle thoroughly and let it dry. Then, you can decorate the bottle with symbols or labels to make it look like a potion bottle. Fill the bottle with colored liquid or glitter for a magical effect. Finally, seal the bottle with the cork or stopper securely.
Why must the glass stopper of a reagent bottle never be placed directly on the laboratory bench?
The stopper of a chemical reagent container should be handled carefully for two reasons. Firstly, it may contain chemical residues which can be dangerous. Additionally, if the stopper is dirtied it may contaminate the reagent in the bottle when the stopper is put back on.
How do you make fire extinguisher working model?
hey! You will need the following things : 1) a hollow glass tube or a eye dropper 2) a big glass bottle 3) a bottle of vinegar 4) a box of baking soda 6 ) a rubber or cork stopper that fit the big bottle 7) paper towel and a rubber band 8) water First thing to is remove the rubber squeeze bulb on the eye dropper and keep the glass tube and make a hole slightly smaller than the glass tube in the rubber or cork bottle stopper and insert the glass tube in the stopper until the tip of tube come out of the stopper . ( Do this slowly ; so not to break the glass) Put baking soda on the sheet of paper towel and attract the corners to the other end of the tube to the rubber stopper securing with the rubber band than fill the big bottle: 1/3 full of vinegar and the other 1/3 with water leaving the bottle about half full Than carefully insert the rubber stopper on the big bottle with the bag of soda hanging above the vinegar water solution. Make sure it a tight seal on the bottle when you ready to use Tip the bottle over and wait a minute or two than the water will shoot out of the tip and you have a working Fire extinguisher I hope this help
Why should we place bottle stopper upside down one the bench?
to avoid contaminating the chemical when the stopper is replaced
What is cook stopper?
A CORK stopper is a plug for a bottle made of cork
What is weighing bottle?
A weighing bottle is a small glass container with a ground-glass stopper used in a laboratory setting to accurately weigh and transfer substances. It is designed to prevent the loss of the substance being weighed due to spillage or exposure to air.
What is a wine bottle stopper?
Cork
