0
Can you determine an unknown substance that contains magnetite by using only one magnet?
Yes, you can determine if an unknown substance contains magnetite by using a magnet. If the substance is attracted to the magnet, it suggests the presence of magnetite or other magnetic materials. However, this test alone will not quantify the amount of magnetite or differentiate it from other magnetic substances. Additional tests would be needed for a more definitive identification.
What else can I help you with?
What exactly is a reagent in English?
A reagent is a chemical substance that reacts with some other substance. It is common to add a specific reagent to an unknown substance to determine whether or not the substance that the particular reagent reacts to is present. (For example, add a reagent for sugar to test for the presence of sugar.)
A scientist has analyzed the chemicals that make of a sample of an unknown substance. Which chemicals would be the best indicator that the unknown substance is a plant?
cellulose and starch
Why are solubility tests helpful to determine unknown substances?
A simple solubility test can be used to identify an unknown substance. Most substance will make a precipitate when around certain molecules.
How do you determine if a substance is containing methamphetamine hydrochloride?
There are colorimetric testing kits available to tentatively identify unknown substances suspected of containing illicit drugs, such as MDMA and methamphetamine. However, these testing kits have been found unreliable in scientific studies. Determining the result relies on interpreting a color change, which is subjective and thus prone to error. Thus, the only certain way to know if a substance contains methamphetamine is to have it tested in a lab, which will likely use gas chromatography/mass spectrometry.
For what two reasons are the melting points routinely used?
Melting points are routinely used to determine the purity of a substance. Impurities often lower the melting point of a substance, so a lower-than-expected melting point can indicate the presence of impurities. Melting points are also used to identify unknown substances by comparing their melting points to established values.
How can you determine whether unknown substance is a mineral?
gchvyvhvyvuv
How can you determine whether an unknown substance is a mineral?
gchvyvhvyvuv
How can one test an unknown substance to identify it?
To identify an unknown substance, one can conduct tests such as spectroscopy, chromatography, and chemical reactions to determine its properties and composition. These tests can help determine the substance's characteristics and compare them to known substances for identification.
How to use stoichiometry determine the concentration of a substance?
To use stoichiometry to determine the concentration of a substance, you need to first balance the chemical equation for the reaction involving the substance. Next, determine the moles of the known substance and use the balanced equation to relate it to the moles of the unknown substance. Finally, calculate the concentration of the unknown substance in terms of moles per liter based on the volume of the solution.
How can density be used to determine the identity of a substancce?
Density can be used to determine the identity of a substance by comparing the density of the unknown substance to the known densities of different substances. Each substance has a characteristic density, so if the density of the unknown substance matches that of a known substance, it can help identify the unknown substance.
How can a titration help you to determine the concentration of an unknown substance?
In a titration, a known concentration of a substance (titrant) is added to the unknown substance until a chemical reaction reaches completion. By measuring the volume of titrant required to reach a specific endpoint, the concentration of the unknown substance can be calculated using the stoichiometry of the reaction.
What is meant by a mixed melting-point determination?
"Mixed melting point determination" is a term used in chemistry. Organic substances have a fixed temperature at which they liquify. If a chemist wants to determine the nature of an unknown substance, he can determine it by these means. If the unknown substance does not melt at the usual temperature, it can be said to be impure. If the chemist has two unknown substances and wants to determine what they are, he may mix equal parts of each and start the liquification process. If the combination melts at the usual temperature, the chemist can say that both are the same. If the chemist wants to determine the nature of an unknown substance, he may mix a fixed amount of a known substance with a fixed amount of an unknown substance, it can be estimated, what the unknown substance is.
How can one identify an unknown substance in chemistry?
One can identify an unknown substance in chemistry by conducting various tests such as spectroscopy, chromatography, and chemical reactions to determine its properties and compare them to known substances.
What properties do scientists look for to identify an unknown substance?
Scientists look for properties such as density, boiling point, melting point, solubility, conductivity, and reactivity to help identify an unknown substance. By comparing these properties to known data in a database, scientists can often determine the identity of the unknown substance.
How do you determine the identity of an unknown substance by observing its mass and volume?
All you can do with mass and volume is to determine the density of the substance. density = mass / volume or p=m/v after you determine the density, you can look on any density table and find the substance you are looking for. good look. -julio
If you have 27 g of an unknown substance A and 75 g of chlorine gas Substance A contains 1.5 times as many molecules as the chlorine gas what is the identity of A?
chicken
Why is it important to identify an unknown substance?
Because the substance could potentially be extremely toxic or harmful. You must never use an unknown substance in experiments without identifying it first, many tests can be undertaken to determine the cation and anion. These tests include the flame test, solubility tests, precipitate reaction tests and conductivity tests. These do vary depending on the unknown substance.
