Miscellaneous

Making disappearing ink requires some chemical compounds that may not be readily available at home. Making blue disappearing ink requires .10 grams of thymolphtalein, 10 milliliters of ethyl alcohol, 90 milliliters of water, and 20 drops of 3M sodium hydroxide (or 10 drops of 6M sodium hydroxide solution.) Start by dissolving the thymolphtalein in the ethyl alcohol. Then stir in the water. One drop at a time, add the sodium hydroxide until the solution turns dark blue. Store the ink in a sealed container until you want to use it.

Technically, Yes. As salt is clear and sugar is a white powder.

The crossword find for "pH bk data" is likely "acid." pH refers to the acidity or alkalinity of a substance, and a pH below 7 indicates acidity. "Data" could be cluing the term "acid," which fits the description.

Well, if too much current goes through the wires or their coating might melt.

Or you can always use a hammer. Or a blade. But why do you hate electromagnets anyway?

It is called water pollution when toxic substances are released into clean water sources, leading to contamination and harm to aquatic life and human health.

The amount of 'disorder' in a system is known as entropy. The entropy of a system is determined by several factors and has an understood rule. The entropy of a system can never decrease, it may remain the same and increase but it can never decrease. This is a result of the fact that everything in nature tends to lean more towards disorder as opposed to order.

A physical characteristic. Your height, hair color, eye color etc.

No, oral suspension and tablets are different forms of medication. Oral suspension is in liquid form, while tablets are solid and meant to be swallowed whole. Depending on the medication, they may have different dosing instructions and absorption rates in the body.

The best method to indicate that a sample of water is pure is through water quality testing using methods like chromatography, spectrophotometry, or conductivity measurements. These methods can detect impurities such as chemicals, heavy metals, or microorganisms in the water. Additionally, comparing the test results against water quality standards set by regulatory bodies can confirm the purity of the water sample.

The doorknob is on one side of the door. It is natural for people to turn out, not in. There's no point making the doorknob turn both ways so manufacturers make it so that it turns only one way to save themselves time.

Ethanoic anhydride is a derivative of ethanoic acid. It is formed by removing a water molecule from two molecules of ethanoic acid. Ethanoic anhydride can react with water to form ethanoic acid.

No, that doesn't make any sense at all for several reasons. The ground is not a living things, so it does not have the capabilities of being awake or asleep. What really causes lighting is static electricity formed in clouds gives off and electrical discharge with the ground beneath it. For example, if the ground was positively charged and the ground was negatively charged, then static electricity would be given off, causing lightning. Also, I think you may have spelled lightening wrong.

Air resistance, also known as drag, increases with speed because the faster an object moves through the air, the more air molecules it must push aside. This results in a greater force acting in the opposite direction of motion, ultimately slowing down the object.

Verdigris is a green or bluish-green coating that forms like rust on brass, bronze, or copper. It is caused by a chemical reaction when these metals have been exposed to acidic elements over time.

The molarity of a solution is calculated by dividing the number of moles of solute by the volume of the solution in liters. In this case, the molarity of the solution containing 2.0 moles of glucose in 4.0 liters would be 0.5 M (2.0 moles / 4.0 liters = 0.5 M).

Some semimetals or commonly known as ''metalloids'' can sometimes be shiny. So yes; semimetals are shiny

Most consumer (cheaper ones) are just a vacuum air valve setup. When you raise the handle on a chair you are opening a sealing valve to let "outside air" into the cylinder and a weak spring will help the chair move up. When you sit in the chair you are over powering the spring and the air holds you up. When you raise the handle again while sitting in it you are opening the valve and the air will escape and the weak spring will give from the weight of the person in it lowering it back down. The more expensive chairs may have a hydraulic or air pump to raise you up. Similar to a Barber Shop chair.

The more extreme (expensive) office chairs may have a replaceable nitrogen cartridge.

The inside of a balloon is not sound proof because it isn't a vacuum.

Platinum does not react with silver at room temperature. However, under certain conditions such as high temperatures or in the presence of certain chemicals, platinum and silver may form compounds or alloys with each other.

The melting point of gallium in degrees Celsius is 30 degrees. To convert 86 degrees Fahrenheit to degrees Celsius, you can use the formula: (86°F - 32) x 5/9 = 30°C.

The amount of water locked up in ice and snow is only about 1.7 percent of all water on Earth, but the majority of total freshwater on Earth, about 68.7 percent, is held in ice caps and glaciers.

Yes, mixing bleach and Windex can produce toxic fumes, such as chlorine gas, which can be harmful if inhaled. It is important to never mix bleach with any other cleaning products.

One way to measure one second without a watch is to count "one Mississippi" between two events. This method involves saying "one Mississippi" at a steady pace, with one second passing between each count. Another way is to use your heart rate as a guide - typically, a resting heart rate will beat around 60 times per minute, so counting two heartbeats should roughly equate to one second.

Gravity prevents these things from floating high..... unless ur in space than whichever is pushed harder;)