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Are freezing and melting points characteristic properties?
Yes, freezing and melting points are characteristic properties of a substance. They are specific temperatures at which a substance changes its state from solid to liquid (melting) or from liquid to solid (freezing) under normal atmospheric pressure.
What is the maximum temperature possible for a substance under extreme conditions?
The maximum temperature possible for a substance under extreme conditions is determined by its melting point or boiling point, which can vary depending on the specific substance. In general, temperatures can reach thousands of degrees Celsius under extreme conditions.
What is a graph that shows the different states of a substance according to the temperature and pressure it is under?
A phase diagram is a graph that shows the different states of a substance (solid, liquid, gas) based on the temperature and pressure it is subjected to. It displays the conditions at which phase transitions occur, such as melting or boiling points.
What does physical properties mean in science terms?
Physical properties are things you observe with your eyes during chemical reaction e.g. Salt analysis the choking smell of ammonia u observed with your nose is a physical properties of ammonia
How can one determine the critical temperature of a substance?
The critical temperature of a substance can be determined by conducting experiments to observe the temperature at which the substance transitions from a gas to a liquid under high pressure. This critical temperature is a key characteristic of the substance's phase behavior.
How does a substances melting point determine its state at room temperature?
If the melting point is under 20 oC the substance is a liquid.
Are freezing and melting points characteristic properties?
Yes, freezing and melting points are characteristic properties of a substance. They are specific temperatures at which a substance changes its state from solid to liquid (melting) or from liquid to solid (freezing) under normal atmospheric pressure.
The melting point of a substance is its freezing point.?
No, the melting point of a substance is the temperature at which it changes from a solid to a liquid, whereas the freezing point is the temperature at which it changes from a liquid to a solid. These points are usually the same for a pure substance under normal atmospheric pressure.
What is the normal melting point?
The normal melting point is the temperature at which a substance changes from a solid to a liquid at standard atmospheric pressure (1 atm). The normal melting point is a characteristic physical property of a substance and can vary depending on the specific material.
Why can you use the melting point to help identify a material?
The melting point is a characteristic physical property of a substance, and it can be used to help identify a material because each pure substance has a specific melting point under standard atmospheric conditions. By comparing the measured melting point of an unknown sample to known melting points of potential materials, you can narrow down the possibilities and identify the substance. Additionally, impurities can cause variations in melting point, so a sharp melting point indicates higher purity, further aiding in identification.
What is the maximum temperature possible for a substance under extreme conditions?
The maximum temperature possible for a substance under extreme conditions is determined by its melting point or boiling point, which can vary depending on the specific substance. In general, temperatures can reach thousands of degrees Celsius under extreme conditions.
When an obtained melting point range is broad what does it tell about the substance?
strong intermolecular forces attract the molecules
How are melting and freezing points similar in a chemical?
Melting and freezing points are both physical properties of a substance related to its phase change from solid to liquid (melting) or liquid to solid (freezing) at a specific temperature. These points are the same temperature for a pure substance under constant pressure and can be used to identify and characterize substances.
Is ice the only substance that melts?
No. Every substance apart from helium (which can only be solidifed at absolute zero under pressure) can melt, provided it is made solid and then heated above its freezing/melting point.
What is the effect of change in pressure in melting point?
Putting a substance under pressure increases its melting point because substances expand as they melt. Putting them under pressure makes it harder for them to expand, which means that they require more energy (heat) in order to transition from a solid state to a liquid state. If a substance is under pressure, decreasing the pressure will lower its melting point.
Is melting point a intensive or extencive property?
Melting point is an intensive property. Regardless of the amount of a substance present the melting point will remain the same.
Under what conditions heat can be given to a substance without raising its temperature?
If the substance is in solid condition and at the melting temperature, heat can be given without rising the temperature. Then the substance melts and all the heat will be used in the melting process. Also when the substance is at the boiling temperature you can add heat without rising the temperature. At that point the heat is used to vaporate the substance.
