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it is the tempered glass!
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∙ 13y ago
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Why must a funnel be heated before hot acetanilide solution is heated and filtered?
Most likely so the glass will not crack as it expands as a result of being heated by a hot solution being poured into it.
What would happen to a cold empty glass if it was placed in a hot humid room?
Hmmm... I think this shld b a better ans. When in a cold room, the glass will contract. So, when taken out of cold room and placed in hot room, expansion will take place. As the glass has uneven surface, the process of expansion will cause the crack.
Is mercury able to be heated up?
Yes, mercury can be heated up. Heat energy will cause mercury atoms to move more and spread out. This is actually how old thermometers would work. The higher the temperature, the more the particles would move and the more the liquid would expand. This would fill up the glass tube on the thermometer and make it possible to tell the temperature.
Which piece of laboratory apparatus would most likely be used to evaporate a 1-milliliter sample of a solution to dryness?
Which piece of laboratory apart it would most likely be used to evaporated E1 millimeters sample of a solution to drynes
What might happen to a heated glass beaker made from material that does not contain boron?
Borosilicate glass has a low coefficient of thermal expansion, which makes it better for situations in which there are wide, rapid temperature changes. For example, if a standard glass container at room temperature is filled with boiling water, the danger of cracking and shattering is quite high due to the inside surface rapidly expanding while the outside is warming up more slowly. A borosilicate glass such as Pyrex doesn't expand nearly as much as plain glass (about one third as much as regular glass). It can thus survive temperature differentials that would destroy plain glass. It is for that reason that laboratory glassware is typically made of borosilicate glass. Based on the premise of the question, a heated glass vessel subjected to rapid cooling (e.g., filled with ice water) is susceptible to shattering into a gazillion shards and slivers of glass.
Why must a funnel be heated before hot acetanilide solution is heated and filtered?
Most likely so the glass will not crack as it expands as a result of being heated by a hot solution being poured into it.
What happens when lava and glass meet?
Glass is made when sand is heated to such a high temperature that it's as hot as an erupting volcano. Not that I've actually tested this but the glass would most likely turn into liquid glass.
Why would a milk bottle probably crack if boiling water were poured into it?
When you pour hot water into a glass bottle, it heats up the glass very quickly. This causes the glass to expand suddenly and the expansion is not uniform over the surface of the glass. The unequal expansion cracks the bottle.This will happen only if the temperature difference is quite high and the glass is weak.It is easier to crack a glass bottle by heating it (like in a dishwasher) and then cooling it immediately by placing it in or under a stream of cold water. Here, the sudden contraction causes the glass to crack.
Why would it be easy to crack a glass bottle when filled with water and subjected to a flame?
The temperature contrasts would cause differential expansion of the bottle which, being brittle, would cause the glass to crack.
Why would a milk bottle crack open if you pored boiling hot water in it?
The milk bottle would crack because the hot water would cause the glass particles to vibrate and move apart, this will make the glass expand from the heat and the glass will then shatter.
What would happen to a cold empty glass if it was placed in hot place?
crack
Does concrete expand when heated?
Yes , just the same as steel - otherwise the rebar would crack structures !
What would happen if you where to put ice cream in a glass cup and then put it in the freezer would it crack?
Highly unlikely.
Can glassware be heated before it has completely dried?
No, heating glassware that is partially wet can cause danger as it would crack and explode.
What items in your house would be from a natural resource?
Glass As glass is heated up sand and wooden stools / tables / chairs as they are made from wood
What would cause spark plugs to crack?
poor installation most likely
How does a rock crack if its subjected to heavy frost?
It is likely that the repeated freeze-thaw cycles would cause the crack or fracture to widen and lengthen.
