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Why when you dunk a hot red metal into water does the water not boil?
When a hot red metal is immersed in water, a layer of vapor forms around the metal, insulating it from direct contact with the water. This layer of vapor prevents the water from coming into contact with the metal and reaching boiling temperature. As a result, the water does not boil immediately.
If you heat a metal in boiling water how do you know the metals heat?
You can tell the metal is hot by observing the color change (if it's red or glowing), feeling the temperature with a non-contact thermometer, or by watching for signs of thermal expansion or other physical changes such as bending or warping.
What is then colour of litmus paper when metal oxide is dissolved in water?
When a metal oxide is dissolved in water, it typically forms a basic solution. In this case, blue litmus paper will remain blue, indicating the basic nature of the solution. If the metal oxide were to produce an acidic solution, red litmus paper would turn blue, but this is less common for metal oxides.
Which metal springs back to shape?
red
What is neutral black or red?
The old UK colouring (still found in old installations) was black = neutral, red = positive, green = earth. The new colouring is blue = neutral, brown = positive, yellow and green stripes = earth. With the new colours: on a UK 3 pin plug when facing the contact screws on the back with the cover removed: blue goes to the left contact as there is an 'L' in blue, and Brown is to the right contact as there is an 'R' in brown.
Why when you dunk a hot red metal into water does the water not boil?
When a hot red metal is immersed in water, a layer of vapor forms around the metal, insulating it from direct contact with the water. This layer of vapor prevents the water from coming into contact with the metal and reaching boiling temperature. As a result, the water does not boil immediately.
If you heat a metal in boiling water how do you know the metals heat?
You can tell the metal is hot by observing the color change (if it's red or glowing), feeling the temperature with a non-contact thermometer, or by watching for signs of thermal expansion or other physical changes such as bending or warping.
What goes into water red and comed out black?
A lobster
What colour does red cabbage indicator go in water?
it goes bluey purpley when it is in water and red in acid and yellow - green in alkali
Do you match red to red when using battery chargers for cars?
Yes, the red cable goes on the positive (red) post. Connect the negative (black) to the engine somewhere where you get a solid ground on metal.
What goes in the water black and comes out red?
a lobster
How to Take spring out of metal?
This depends on the metal, but for most metals, the answer is : heat the metal to red heat, then cool it slowly. This is called annealing. copper is one of the exceptions. To anneal it, get it red-hot then dunk it in cold water.
How do you heat treat or harden a metal chisel?
Heat the metal red hot. To harden the metal, cool it quickly by dunking it into cold water. To get a soft metal, let it cool slowly.
An element x on burning in air forms an oxide which when dissolved in water turns blue litmus red idetify if x is metal or non - metal?
as blue litmus turns red the compound is an acid. Non metal oxides are acidic in nature. Thus the the element 'X' is a non metal.
If two similar pieces of metal are heated one to red hot and the other just hot are plunged into water why does the hotter piece cool the quickest?
metal
What goes in the water and comes out red what is the answere?
The answer is a lobster. Lobsters are a type of shellfish that are typically brown or green, but they turn bright red when they are cooked.
What does a red line on your blackberry battery mean?
a friend had told me that the stripe turns red after it has been through any contact with water or just water damaged, so anything having to do with humidity
