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What else can I help you with?
When water in a glass tube is heated the level of water in the tube?
rises because the water expands when heated, causing an increase in volume which leads to a higher level in the tube.
How do you know when to bend the glass tube?
You should bend the glass tube when it is heated evenly to a specific point, usually indicated by a color change from the heat. It is important to bend it slowly and steadily to avoid cracking or uneven shaping of the tube. A glassworking torch or flame is typically used for this purpose.
How do scientists form glass parts that they need from glass tubes?
By pulling on both ends of heated glass. The more they pull, the smaller the diameter of the resulting glass tube or capillary.
When a mercury therometer is heated the mercury expands and rises in the thin tube of glass What does this indicate about the relative rates of expansion for mercury and glass?
The fact that the mercury expands and rises in the thin glass tube when heated indicates that mercury expands more than glass when heated. This suggests that mercury has a higher coefficient of thermal expansion compared to glass.
Does glass looked different when heated opposed to glass not heated?
Yes, because if glass is heated it breaks, if glass is not heated it doesn't break.
What is an audion?
An audion was an early variety of electronic amplifying tube consisting of a partially evacuated glass tube with three electrodes, a heated filament, a grid and a plate.
What is the blood red residue formed in a glass test tube when copper carbonate is heated vigourously with carbon?
Elemental copper.
How heat is transferred through the glass walls of the boiling tube?
this fails
What gas is evolved when a few crystals of potassium nitrate are heated in a hard glass test tube?
Nitrogen dioxide and oxygen are released.
What does glass smell like when it is heated?
When glass is heated, it does not have a distinct smell.
Why the glass apparatus may break when it washed immediately after heating?
This is mainly due to the difference in temperature. Once glass (let's take a test tube for example) has been heated, the glass itself assumes this temperature also. If you pour or immerse this heated test tube in cold water, it causes the glass to contract; this contraction causes the glass to crack and of course shatter. Glass as you're aware isn't very flexible or elastic and instead is brittle so this happens fairly easily with standard laboratory equipment. Hope this answers your question.
Do glass shrink when heated?
No, glass does not shrink when heated. In fact, glass expands when heated due to increased molecular movement. If glass is subsequently cooled down rapidly, it can crack or shatter due to thermal stress.
