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Is the variable alcohol when using water and alcohol to see how many drops can fit on a penny?
Yes, in this experiment, the variable "alcohol" refers to the liquid being tested to see how many drops can fit on a penny. By changing the type of alcohol used, you can observe how it affects the number of drops that can fit on the penny due to variations in surface tension and viscosity.
What else can I help you with?
How many drops of soapy water fit in a penny?
Ideally, everyone performing the experiment would include the following: - distilled waterThere are a lot of factors involved. The cohesion and adhesion ('stickiness') of water molecules can be effected by things like oils (on surface pennies from peoples' skin) and other contaminates on the penny. The size of the dropper or pipette will determine the size of each water droplet - the larger the drop, the fewer number of drops will fit on the penny. The manner in which the water is added to the penny is also a factor. Water has a cohesive nature (the molecules are kind of like magnets and are attracted to one another). Therefore, if the drop from the pipette is allowed to touch the water already on the surface of the penny, the water can be 'pulled' out of the dropper. When this happens, the size (volume) of the drop is not always the same - it could be a very small amount (which will result in a very large number of drops), or a large amount. Soap causes the cohesiveness ('stickiness') of the water molecules to decrease so they are not as strongly attracted to each other. Because of this, when soap is added to the water the number of drops that can be placed on the penny will decrease. The water molecules can't 'stick' together as well, so the water on top of the penny spills off sooner than it would with non-soapy water. Ideally, everyone performing the experiment would include the following: - distilled water (to start with) - same type/size of calibrated dropper/pipette - same date of penny - penny cleaned as thoroughly as possible using same cleaning procedure - same 'dropping' procedure
What is 10 drops of water liquid best estimate?
10 drops of water liquid is roughly equivalent to 0.5 milliliters. Drops can vary in size, but this is a common estimate when using a standard dropper.
Will rubbing alcohol on hands make you fail a alcohol test?
Rubbing alcohol does not contain ethanol, which is what alcohol tests typically detect. Using rubbing alcohol on your hands should not cause you to fail an alcohol test.
What is the purpose of using Mylicon drops?
Mylicon drops tend to be given to babies who suffer from colic- a painful amount of wind in the digestive tract. The drops work by releasing the gas which is causing the baby pain and is an alternative to gripe water.
Does alcohol clean pennies?
Alcohol does clean a penny because it has 91% that takes away germs and any other bacteria on the penny. It takes about 2 or 3 days to clean the penny but it cleans it for sure I am positive about that I tried it myself. But it only took at least 1 or 2 hours to clean it with alcohol. Now Pepsi I'm not sure how long but I'm pretty sure it's about 2 or 3 days you should try it yourself it's so much fun and you have a good science fair project a Pepsi and alcohol you're going to have to make up a question yourself.Yes BUTTTTT ....NEVER, EVER try to clean valuable coins to make them "look better". Dumping a modern penny in Coke to see what happens is a good chemistry experiment, but don't try it with an Indian penny from your grandfather's coin collection because it'll go from being worth possibly several dollars as a collectible, down to only a cent or two as a damaged coin.
Why does rubbing alcohol clean pennies?
Alcohol has 91% that takes away germs and any other bacteria on the penny. It's a non-abrasive cleanser. While using ethanol will clean surface dirt and oils from a penny, like a solvent, it's actually the innate properties of copper which keep a penny germ free.
How do you oil a penny board?
To oil a penny board, first, remove the wheels by unscrewing the nuts with a wrench or socket. Clean the bearings using a solvent like rubbing alcohol to remove dirt and old lubricant. Once clean, apply a few drops of suitable skateboard bearing oil or a lightweight lubricant directly into each bearing. Reassemble the wheels, ensuring they spin smoothly, and you're good to go!
How do you solve an or problem if a variable is unrestricted in sign?
Solve the problem using the + sign for the variable. Then solve the problem using the - sign for the variable. Report your answer as the answer that you got using + or the answer that you got using -.
What variable do you change when using the scientific method?
The independent variable
How to display a variable in PHP using echo or print statements?
displaying a variable in php using echo statement? <?php $name="ram"; //declaring and defining the variable echo "$name"; //printing the variable using echo command ?>
Method of using super glue to close open wounds?
Clean the edges of wound with alcohol, press the edges of wound together and apply drops of super glue over the edges.
How can I create a homemade cleaning solution using rubbing alcohol and peppermint oil?
To create a homemade cleaning solution using rubbing alcohol and peppermint oil, mix together 1 cup of rubbing alcohol with 10-20 drops of peppermint oil in a spray bottle. Shake well before use and spray onto surfaces for a natural and refreshing cleaning solution.
How many drops of water can a penny hold on its surface?
Water has a surface tension. When dropping water on a penny, people usually underestimate how much water the surface of a penny can hold. The surface tension of water is strong on a smaller surface, and when dropping water on the surface of a penny, towards 20 drops the water on the penny will look like it is bulging out a lot. It really depends, depending on which side of the penny you are using, it ranges from 6 to even 34 drops using a simple eyedropper. Because eyedroppers do not produce the exact same size of drops every time, the result is not very accurate. To be even more accurate, scientists use accurate distributing machines and a very new penny to determine how many drops of water it can hold without vibrations. There could be certain amounts of grime and dirt on a penny, depending on how old it is, which can affect how much water can be put onto it. Different types of water can also change how much a penny can hold. Tap water has certain amounts of chemicals in it, and that could also affect the weight and surface tension of the water on the penny. The height of which the water comes off from matters too, the more force of the water that comes down, the more likely the water on the penny is to splash and spill. The place the water lands on also has an effect on it. To be even more accurate, light has a mass. If light shines directly at the water on a penny, it could push it a tiny bit. This change is impossible to see, and it has basically no effect on the penny or water at all whatsoever. Remember, all tests may not be 100% accurate, and there may always be a chance that there is a better way to make a penny hold more droplets of water than the presumed "most advanced and accurate" way.
Make a sentence using hypothesis controlled experiment and variable?
Make a sentence using hypothesis, controlled experiment and variable. Make a sentence using hypothesis, controlled experiment and variable.
A sentence using the word independent variable?
We used 3 kinds of soaps in the experiment, which each was an independent variable.
How many drops of soapy water fit in a penny?
Ideally, everyone performing the experiment would include the following: - distilled waterThere are a lot of factors involved. The cohesion and adhesion ('stickiness') of water molecules can be effected by things like oils (on surface pennies from peoples' skin) and other contaminates on the penny. The size of the dropper or pipette will determine the size of each water droplet - the larger the drop, the fewer number of drops will fit on the penny. The manner in which the water is added to the penny is also a factor. Water has a cohesive nature (the molecules are kind of like magnets and are attracted to one another). Therefore, if the drop from the pipette is allowed to touch the water already on the surface of the penny, the water can be 'pulled' out of the dropper. When this happens, the size (volume) of the drop is not always the same - it could be a very small amount (which will result in a very large number of drops), or a large amount. Soap causes the cohesiveness ('stickiness') of the water molecules to decrease so they are not as strongly attracted to each other. Because of this, when soap is added to the water the number of drops that can be placed on the penny will decrease. The water molecules can't 'stick' together as well, so the water on top of the penny spills off sooner than it would with non-soapy water. Ideally, everyone performing the experiment would include the following: - distilled water (to start with) - same type/size of calibrated dropper/pipette - same date of penny - penny cleaned as thoroughly as possible using same cleaning procedure - same 'dropping' procedure
What is the name of the variable that describes data using words or numerals as labels?
The variable that describes data using words or numerals as labels is called a categorical variable.
