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∙ 13y agoWhen oil is poured into a u-tube test tube of water, the oil will separate from the water due to their difference in density. The oil, being less dense, will float on top of the water, creating two distinct layers. This is because oil is hydrophobic and does not mix with water.
The melting point is determined with special devices. See this link.
Blowing over the mouth of the test tube will create a decrease in air pressure inside the tube. This decrease in pressure will cause the water in the test tube to rise up due to the higher pressure outside the tube. Ultimately, the water level in the test tube will rise as a result of the change in pressure.
When smoke touches cold water in a test tube, it cools down rapidly, causing the smoke particles and gases to condense and form a visible cloud. This cloud is the result of the water vapor in the smoke condensing into tiny water droplets, making the smoke more visible.
Using a luminous flame to boil water in a test tube can lead to incomplete combustion, resulting in the formation of soot or carbon particles that may contaminate the water. It may also affect the purity of the water due to the combustion products in the flame. It is recommended to use a clean, blue flame for heating applications in the laboratory to avoid this issue.
If iron nails are dipped in water in a test tube for a week, they are likely to undergo a chemical reaction known as rusting, where they react with oxygen and water to form iron oxide. This process weakens the iron nails and causes them to corrode and become covered with a reddish-brown layer.
One way to find out if there is air in water is to observe bubbles rising to the surface. Another method is to listen for a sound when water is being poured, as air may create a bubbling or gurgling noise. Additionally, you can test for air by performing a water displacement test using a submerged object in the water.
It either floats or sinks...put the marbles in water to test them!
if the metal sinks in water is is proof it is gold
The melting point is determined with special devices. See this link.
bend test visual examination radiographic test all of the above
It will bend to the southwest.
It all depends on what is in the test tube and just what kind of green pigment.
To test the water
The level of water in the test tube will decrease as hydrogen gas is produced. This is because the volume of the gas will displace some of the water in the test tube.
No, pouring tap water into your urine will not cover up a drug test. Drug tests are designed to detect specific substances in urine, and adding water will dilute the sample but is likely to be detected by the testing process.
the only way to find out test it .
You fail the test.