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Why would it be diffult to determine the mystery element with only one test?
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What instrument can be used to determine the identity of an element if its flame color is the same of another element?
Mass spectrometer would work.
Suppose you were given an unknown liquid and asked to determine if it was an element a compound or a mixture What would you do How would this help you find out what it was?
If I was given an unknown liquid and asked to determine if it was an element, a compound, or a mixture I would heat the unknown liquid up to see if any compounds separated from the unknown liquid. After that I would get a microscope and look to see if it is a pure element. Then I would get a Platelet separation machine and put the liquid in the machine to see if the liquid separated. Thats how I would determine if the an unknown liquid is an element, a compound, or a mixture.
What information could you use to determine the atomic number of an unknown element that has the mass number of 22?
If you don't know the element, then you would need the number of electrons in a neutral atom of the element, which would be the same as the atomic number.
How can the periodic table be used to predict the properties of an element that has not been discovered?
It can't. the properties of an element determine it's group placement, without knowledge of these properties (or, indeed, the element itself) it would be impossible to place an element in it's proper place on the periodic table.
What are three compounds of gold?
There are an extremely large number of possible gold compounds (billions would be a tremendous underestimate). An exact number is utterly impossible to determine.
What instrument can be used to determine the identity of an element if its flame color is the same of another element?
Mass spectrometer would work.
Suppose you were given an unknown liquid and asked to determine if it was an element a compound or a mixture What would you do How would this help you find out what it was?
If I was given an unknown liquid and asked to determine if it was an element, a compound, or a mixture I would heat the unknown liquid up to see if any compounds separated from the unknown liquid. After that I would get a microscope and look to see if it is a pure element. Then I would get a Platelet separation machine and put the liquid in the machine to see if the liquid separated. Thats how I would determine if the an unknown liquid is an element, a compound, or a mixture.
What information could you use to determine the atomic number of an unknown element that has the mass number of 22?
If you don't know the element, then you would need the number of electrons in a neutral atom of the element, which would be the same as the atomic number.
Can you determine whether the atoms are the same element with out looking at the nuclei?
To a certain extent yes. In a balanced element the number of electrons match the number of protons in the core of the element. If electrons have been added or removed (as in an ion) then you would need to know the exact number added/removed, or rebalance the element, in order to determine the specific element.
What are the protons and newtrons of a banana?
A banana is not an element. You would have to determine the specific elements present and then figure out what their proton and neutron counts are.
How can the periodic table be used to predict the properties of an element that has not been discovered?
It can't. the properties of an element determine it's group placement, without knowledge of these properties (or, indeed, the element itself) it would be impossible to place an element in it's proper place on the periodic table.
What are valence electrons and what do they determine?
They determine many things. They can be used to predice hybridization, determine octet, be used to assign formal charges. The simplest answer would be for a intro to chem class, they determine the number of electrons in the atom's "outer ring"
How can you use boiling points and melting points to determine a solid liquid or gas that an element would be in at a certain temperature?
If the temperature is below the melting point then the element is a solid.If the temperature is above the melting point but below the boiling point, then the element is a liquid.If the temperature is above the boiling point, then the element is a gas.
What are three compounds of gold?
There are an extremely large number of possible gold compounds (billions would be a tremendous underestimate). An exact number is utterly impossible to determine.
How would you distinguish an isotope from a neutral element?
1. An atom is neutral because hasn't an electrical charge. 2. An ion has an electrical charge, positive or negative.
Which element would have properties most similar to the new element?
The element that would have properties most similar to the new element would be an element that lies in the same group as the new element. Specifically, the element with the most similar properties will lie directly above or below that element in the group.
Why would it probably be very difficult to determine the chemical and physical properties of a newly discovered element?
Any newly discovered synthetic elements are extremely radioactive and have extremely short half-lives and only a few atoms at most can be produced. At the moment, science is not able to isolate enough for a long enough time. Therefore, it would be difficult to collect and keep enough of the element to determine its chemical and physical properties.
