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The substance with the lowest known melting temperature is the noble gas helium.
Helium will not freeze at atmospheric pressures, but will freeze at about 1K (-272oC) when pressure is increased to 2.5 MPa (about 25 times atmospheric pressure).
Due to helium's small Atomic Mass, and relative insucceptibility to dispersion forces, it is unlikely that there is a substance with a lower melting temperature.
One substance that melts at a lower temperature is ice, which melts at 0 degrees Celsius. Other examples include butter and chocolate, which have lower melting points compared to metals or rocks.
Gold melts at the lowest temperature but if the options are given as follows a)copper
b)silver
c)gold
d)lead
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When a substance melts the temperature of the substance?
it decreases.
Which element melts at the lower temperature-oxygen or mercury?
Mercury has a lower melting point compared to oxygen. Mercury melts at -38.83°C, while oxygen melts at a much lower temperature of -218.79°C.
Does a wet rock generally melts at a lower temperature than a dry rock true or false?
True. A wet rock generally melts at a lower temperature than a dry rock because the presence of water in the rock lowers its melting point due to the water acting as a flux, reducing the energy required for melting.
Which has a lower temperature ice water or ice?
Ice water has a lower temperature than ice. Ice water is a mixture of ice and water at the temperature of 0 degrees Celsius, while ice is held at 0 degrees Celsius until it melts and transitions into water.
How much energy is released when a substance is cooled to its original temperature?
When a substance is cooled to its original temperature, no energy is released. Cooling a substance typically involves removing energy from the substance, but this process does not generate energy. The energy removed is used to lower the temperature of the substance.
When a substance melts The temperature of the substance increases?
it decreases.
When a substance melts the temperature of the substance?
it decreases.
What decreases the rate at which a substance melts?
decreasing the temperature
Which element melts at the lower temperature-oxygen or mercury?
Mercury has a lower melting point compared to oxygen. Mercury melts at -38.83°C, while oxygen melts at a much lower temperature of -218.79°C.
The temperature at which a substance freezes is lower than the temperature at which it melts?
The freezing point of a substance is lower than its melting point because freezing involves the removal of thermal energy to transition from liquid to solid, while melting requires adding thermal energy to transition from solid to liquid. The freezing point is where the substance goes from a higher energy state (liquid) to a lower energy state (solid).
What will happen if the ignition temperature is lower than the room temperature?
If the ignition temperature is lower than the room temperature, the substance will not ignite or burn spontaneously at room temperature. Ignition temperature refers to the minimum temperature required for a substance to ignite and sustain combustion, so if it is lower than the room temperature, the substance will remain stable at that temperature.
When does a substance changes from a solid to a liquid?
A substance changes from a solid to a liquid at the substance's melting point. This is a different temperature for every substance. For example, water (ice) melts at 0oC, whereas gold melts at 1,064oC.
What is melting points degrees?
The temperature at which something melts, what that is depends on substance in question.
What happens to viscosity as temperature increases?
As temperature increases, viscosity generally decreases. This is because the molecules in a substance have more kinetic energy at higher temperatures, causing them to move more freely and flow more easily, resulting in lower viscosity.
Does a wet rock generally melts at a lower temperature than a dry rock true or false?
True. A wet rock generally melts at a lower temperature than a dry rock because the presence of water in the rock lowers its melting point due to the water acting as a flux, reducing the energy required for melting.
Does bromine melt at a lower temperature than ethanol?
Yes, bromine melts at a lower temperature than ethanol. Bromine has a melting point of -7.2 degrees Celsius, while ethanol melts at -114 degrees Celsius.
What solid substance never melts?
No solid substance exists that never melts. All substances have a melting point at which they transition from a solid to a liquid state due to changes in temperature.
