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When bright red mercury (II) oxide is heated in a test tube oxygen gas is evolved and droplets of liquid mercury condense at the cooler top of the test tube.?
Yes, it is correct.
What is the source of liquid droplets seen on the inner upper side of the test tube during the heating process?
The liquid droplets on the inner upper side of the test tube are likely due to condensation. As the test tube is heated, the air inside expands and rises, coming into contact with the cooler upper side of the test tube, causing it to condense into droplets.
How could you show that water is given off when epsom salts are heated?
When epsom salts are heated, water vapor is produced as a byproduct. This can be shown by heating epsom salts in a test tube and collecting the water vapor produced in a cooled condenser, where it will condense back into liquid water. The presence of liquid water in the condenser confirms that water is given off during the heating of epsom salts.
What safety procedure should be taken when heating a solution in a test tube?
The most general precaution to use when heating a liquid in a test tube is to make certain that the top of the tube is not pointed toward you or any other person nearby in the lab. You would also want to make sure you are wearing a lab coat, protective goggles and are using an appropriate device to handle the test tube.
Why test for pH?
You test for pH so you know whether a liquid is an acid or base. Depending on the answer, the liquid has a different response to what you mix in with it. In the body, pH balance is important as well.
What will happen to the liquid in the test tube after heating?
In my idea,it will not boil!!thats all!!
Why is there no convection current when the liquid in the test tube is heated at the top?
because convection currents are caused by the liquid being heated, becoming less dense due to increased kinetic energy and rising. if you are heating the top of the test tube, there is nowhere for them to 'rise' to, so no current is formed, as they do not reach a place where they cool and sink to the bottom. thus convection currents are only formed when heating the bottom of a test tube.
When bright red mercury (II) oxide is heated in a test tube oxygen gas is evolved and droplets of liquid mercury condense at the cooler top of the test tube.?
Yes, it is correct.
What happened when you placed a lighted match near the test tube?
The heat from the lighted match caused the liquid in the test tube to heat up. If the liquid was flammable, it may have caught on fire. However, if the liquid was not flammable, it would have simply heated up and there may have been no other visible changes.
What happen ton sulphar when slightly heated in test tube by a Bunsen burner?
When sulphur is heated in the test tube in the absence of air the sulphur will break down and form a red-brown liquid. If oxygen comes into play sulphur dioxide is produced, however you should not that sulphur dioxide is a highly toxic gas and should only be produced in small amounts under a fume hood.
What exactly are science test tubes?
Science test tubes; generally made of pyrex to reduce breakage, are tubual containers often used in experiments. They can be heated, and cooled, and can you can use liquid or powder substances in them.
What is the source of liquid droplets seen on the inner upper side of the test tube during the heating process?
The liquid droplets on the inner upper side of the test tube are likely due to condensation. As the test tube is heated, the air inside expands and rises, coming into contact with the cooler upper side of the test tube, causing it to condense into droplets.
How could you show that water is given off when epsom salts are heated?
When epsom salts are heated, water vapor is produced as a byproduct. This can be shown by heating epsom salts in a test tube and collecting the water vapor produced in a cooled condenser, where it will condense back into liquid water. The presence of liquid water in the condenser confirms that water is given off during the heating of epsom salts.
What is the proper way to heat a liquid in a test tube?
the proper way to heat a liquid in a test tube is by putting it in open flame.
What is a piece of science equipment that heats large amounts of liquid and has six letters?
The term retort applies to a container where fluid is heated and evaporated in distillation.There is also a beaker which does not contain an extremely large amount of liquid, but more than a test tube. Another word for either, with 5 letters, is "flask."
Which safety precaution is recommended when a liquid is being heated in a test tube?
Wear goggles and a laboratory apron Hold the test tube with a test tube clamp not in your bare hand. If the liquid is nonflammable it may be heated in the flame of a Bunsen burner, otherwise a hot water bath over a hot plate may be more advisable. If heating in the flame of a Bunsen burner hold the test tube at an angle and move the tube in and out of the cool area of the flame. Alway point the opening of the test tube AWAY from yourself and others.
Why is the alcohol not heated in starch test?
Alcohol is not heated in the starch test because heating can denature the enzymes involved in the reaction, leading to inaccurate results. The purpose of the starch test is to detect the presence of starch by forming a blue-black color complex with iodine, which does not require heating.
