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The reason is because glass is heated up sand, wheras metal is an ore, so when u heat u glass, it attempts to become its origonal state :)
answer 2 Glass is a poor conductor of heat, but will expand upon heating. The combination of these two things means that if glass is heated quickly, it will develop stresses and may crack.
The glass used on stove tops is special glass with a low coefficient of expansion, so one of the danger factors above is missing.
Glass used as laboratory ware is often very thin, or made glass with a low coefficient of expansion.
Another technique used to make glass more heat-resistant (e.g. cups and pans) is to pre-stress it (tempered glass) so that the surface is under compression, and thus resistant to cracking.
Metal on the other hand, is not usually subject to brittle fracture, and it is usually a good conductor of heat.
What else can I help you with?
What is The term used to explain metal expanding when heated?
The term is thermal expansion. When metal is heated, its particles gain kinetic energy and vibrate more vigorously, causing the metal to expand due to the increased space between the particles.
When the metal ball is heated can it go through the metal ring?
when the ball is heated, it will pass through the unheated ring.
Why is metal no longer magnetic when heated?
When heated, the thermal energy supplied to the metal causes the thermal motion of its atoms to increase, disrupting the alignment of their magnetic moments. This disrupts the collective magnetic behavior that gives the metal its magnetic properties. As a result, the metal loses its magnetism when heated.
Name one metal which does not react with oxygen when heated?
Gold is a metal that does not react with oxygen when heated, even at high temperatures. This is because gold is a noble metal with low reactivity.
Does glass heated in a hot flame glow and becomes fluid?
Glass can soften and become pliable when heated in a hot flame, but it does not glow like metal does when it reaches high temperatures. It does not become fully fluid like a liquid, but it can become molten and flow like a thick syrup.
Why a glass jar can be easily opened if the metal lid is heated?
because metal will expand when it has been heated up
How are Kazoos made?
Plastic - injection mold. Metal, sheet metal presses, wood - hand carved. Glass - tubes as heated and altered in a glass blowing method.
Why a glass jar can open easily if the metal lid is heated gently first?
Heat causes the metal to expand, thus breaking the seal.
What is The term used to explain metal expanding when heated?
The term is thermal expansion. When metal is heated, its particles gain kinetic energy and vibrate more vigorously, causing the metal to expand due to the increased space between the particles.
What is aneling?
i think its "annealing"... if so, it is a process where both metal and glass are heated in order for them to change their/its properties.
Why an empty glass cracks when you pour very hot water into it but it does not crack if there is a metal spoon in it?
As the metal spoon is a good conductor of heat and because heat travels from a hotter reigion to a colder reigion,the metal spoon will conduct heat away from the hot water and thus,the emty glass will not crack.
Why do metal window frames sometimes cause the window glass to crack on cold days?
Metal window frames can cause the glass to crack on cold days due to the difference in thermal expansion and contraction rates between the metal and the glass. When temperatures drop, metal frames contract more than the glass, creating stress at the interface where they meet. This stress can lead to cracks, especially if the glass is already under tension or has imperfections. Additionally, if the metal frame is poorly insulated, it can exacerbate the temperature difference, increasing the risk of cracking.
Will the volume of metal decrease if it is heated?
No, the volume of a metal increases as it is heated. It expands.
Is a drinking glass made up of cells?
No, a drinking glass is not made up of cells. It is typically made of glass or other materials such as plastic or metal. Cells are the basic building blocks of living organisms.
Why do train tracks expand?
Metal expands when it is heated. Since track is made of metal then it expands when it is heated by the sun.
When the metal ball is heated can it go through the metal ring?
when the ball is heated, it will pass through the unheated ring.
What glue bonds glass to metal?
An epoxy will bond glass to metal.
