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What are some examples of physical properties scientist use to tell the differences between substances?
Scientists may use physical properties such as density, melting point, boiling point, and solubility to differentiate between substances. These properties are unique to each substance and can be measured to help identify the composition of a material.
Why can the boiling point and the melting point be used to help identify a substance?
The boiling and melting points are almost unique to individual substances. If it should happen that two possible substances have the same melting point, they can still be identified by the method of mixed melting points. If substances A and B have the same melting point and you mix them, the mixture will melt belowthe tabulated temperature. Thus if you mix your unknown with a sample of what you think it is, if you are right it will still melt sharply at the expected temperature, but if you are wrong it will melt gradually and at a lower temperature.
Can two different pure compounds have the same melting point?
Yes, two different pure compounds can have the same melting point if their molecular structures and intermolecular forces are similar enough to result in the same temperature at which they transition from a solid to a liquid state.
For what two purposes are melting points routinely used?
- melting point is a specific characteristic of a substance; consequently we can distinguish these substances knowing the melting point - the knowledge of the melting point is absolutely necessary to design technological processes, to made alloy, to use surely materials at high temperature, etc.
How does two different pure organic compounds can have the same melting point?
Two different pure organic compounds can have the same melting point if they have similar molecular structures and intermolecular forces. The similarities in molecular structure and forces can lead to similar interactions between molecules, resulting in both compounds melting at the same temperature. This phenomenon is known as "melting point depression."
How many characteristic properties of 2 substances must be different for the two substances to be different?
Two substances must have at least one different characteristic property to be considered different. These properties can include melting point, boiling point, density, chemical composition, and physical state.
What information do you need to tell if two substances are the same or different?
density , boiling point, melting point also mass & volume if you wanted to include those
When you are measuring the melting point of a mixture which consists of two unknown substances how can you find out what substances does the mixture consists of?
heat it
What two uses do chemist put the melting points of substances?
- a substance can be identified after the melting point because it is a specific physical characteristic- melting points knowledge is necessary for technology
What are the two properties of iron oxide that are different from iron?
Density and melting point are different.
Why is mixed melting point in organic compound?
A mixed melting point in organic compounds occurs when two different compounds are combined, and the resulting mixture has a lower melting point than the individual components. This phenomenon is often indicative of the presence of impurities or the formation of a solid solution, which disrupts the orderly crystal lattice structure of the pure substances. Consequently, the melting point decreases due to the disruption of intermolecular forces, leading to a less stable solid form. This property is commonly used in organic chemistry to assess the purity of substances.
Explain why the boiling point and the melting point can be used to help identify substances?
100 degrees mate. 100 degrees Celsius is the boiling point for pure water at 1atm or sea level. The boiling point is useful in identifying chemical compounds. Chemical compounds have different boiling points that are specific to it' s chemical composition. If you know what the boiling point or melting point is you can also tell if your compound is pure, as any impurities will change these.
Three test tubes labeled A B and C contain substances with appromimately the same melting points. How could you prove the test tubes contain three different chemical compounds?
You can label the test tubes with the names or letters like A,B and C. The difference can be seen from looking at the test tubes. However; there are also tests that can help you differentiate between different substance.
What are some examples of physical properties scientist use to tell the differences between substances?
Scientists may use physical properties such as density, melting point, boiling point, and solubility to differentiate between substances. These properties are unique to each substance and can be measured to help identify the composition of a material.
Why can the boiling point and the melting point be used to help identify a substance?
The boiling and melting points are almost unique to individual substances. If it should happen that two possible substances have the same melting point, they can still be identified by the method of mixed melting points. If substances A and B have the same melting point and you mix them, the mixture will melt belowthe tabulated temperature. Thus if you mix your unknown with a sample of what you think it is, if you are right it will still melt sharply at the expected temperature, but if you are wrong it will melt gradually and at a lower temperature.
Can two different pure compounds have the same melting point?
Yes, two different pure compounds can have the same melting point if their molecular structures and intermolecular forces are similar enough to result in the same temperature at which they transition from a solid to a liquid state.
For what two purposes are melting points routinely used?
- melting point is a specific characteristic of a substance; consequently we can distinguish these substances knowing the melting point - the knowledge of the melting point is absolutely necessary to design technological processes, to made alloy, to use surely materials at high temperature, etc.
