How does a salt tester work?
88784
when the salt in in the water, it contribute ions in the water. and ions will conduct the electricity. the salt tester will test the electricity in the water, therefore, the salt compound will be measured
306573
Same as the way to test a diode. One pin is negative and the other is positive. Set the multimeter to test resistance.\n\nTRansistor is a two diode cirtuit, you have to determine if this is PNP or NPN transistor. Use the negative probe and connect to N or negative pin, use the positive probe of the multimeter and tap the P or positive pin of the transistor. Correct polarity test should show a resistance, if none then its busted.\nWhile reverse polarity should show a ZERO resistance, anything else shows a short circuit.\n\nSCR or silcon control rectifier is like two diode all regulating current outward, test procedure is the same, basic is like testing diode, correct polarity should show a flow in current or a resistance, while reverse polarity test should show a ZERO resistance or no flow.\n\nKnow the part polarity pin first.
374138
Need to be more specific in your question.  There are many different types of salts, each with their own densities.
493715
Water will weakly (very weakly) conduct an electric current because it self-ionizes or ionizes (breaks apart) into Hydronium (H3O+) and hydroxide ions (OH-).  This isn't enough to show any conductivity with the traditional "light bulb conductivity tester."\n\nBy "water" I mean completely pure water.  Once you start dealing with water in oceans, ponds, bathtubs, etc. you've added solutes to the water.  If those solutes are able to break apart into ions (ionic and limited covalent compounds) then the water will conduct an electric current.\n\nThe question about table salt has already been answered, but if you're asking how that's different from "salt" as a chemist would use the term....  A salt is a compound made from the anion of an acid and the cation of a base... this covers most if not all ionic compounds...
344411
It is just the equalizing of electrical charge between two people or a person and a conductive object.\n\nFor example, if your dragging your feet on the carpet, you are building up a greater negative electrical charge on your body.  When you come in contact with someone who has less negative charge than you, nature tries to make everything equal by sharing some of your negative charge.  \n\nSimilar concept if you add saltwater to pure water, the mix shares the salt with the "less salty" water.  Now the pure water is more salty, but the salt water is less salty than it was.  Hope this helps.\n\nThe link below is a bit more complex, but explains the underlying priciples.
340627
The atomic bonds in sugar are very tight and do not allow for (measurable) ionization, which is what helps water conduct electricity.  Salt (NaCl) is a powerful ionization agent - the Cl atom "steals" Na's outer electron, forming a Na+ ion, which attracts new electrons introduced into the water.  We call that a conductor!
50608
Built into each device is a microprocessor with a built-in miniature diferential hydrometer.  They detect the slightest presence of running water.\n\nThe only solution is to toss these devices.
218353
It depends.\nThe salt has to dissolve in water.\nThe more ions / cm3 in te water (never mind the kind),\nthe better the electric conductivity.
114256
You know that salt melts ice.\n\nDo a controlled experiment.  Set up four treatments using ice cubes in separate dishes.\n\n1: Ice alone.\n2: Ice + salt.\n3: Ice + sugar.\n4: Ice + flour.\n\nLook at the dishes every couple of minutes and write down what you see--which dishes have water and how much.  \n\nAfter a certain time, say 15 minutes or 30 minutes, remove the remaining ice (if there is any) and measure the amount of water that melted for each dish.\n\nRepeat the experiment at least one more time (more than one repeat is desirable).  \n\nPrepare a table that shows the results of your observations.  Look over the table and draw conclusions.
798924
Sodium Error\nMore correctly called alkali ion error, sodium ion error\noccurs at high pH, where hydrogen ion concentration\nis very low in comparison to sodium ion concentration.\nThe sodium ion concentration can be so high relative\nto hydrogen ion contration that the electrode begins to\nrespond to the sodium ion. This results in a reading\nthat is lower than the actual pH. Depending on the pH\nglass formulation, this can occur as low as 10 pH.\nWhere accurate high pH readings are required, the\nupper pH limit of the pH electrode should be checked\nand a specially formulated, high pH electrode used if\nnecessary. Compared to sodium, lithium ions will produce\na larger error, while the effect of potassium ions\nis negligible.
374011
It doesn't if the substance that is being tested is a liquid.  If the substance is a solid, then you need water to facilitate the interaction between the substance and the litmus.
1073643
the easiest way is to use a pH paper to test the pH. and just compare the reading with the one given with the test kit. \n\nOr you may do some neutralisation. And then calculate with the  amount of alkali you use for neutralisation. By that you can calculate the concentration of hydroxide ions in the alkali that you use. Then calculate the pOH for the alkali you use. pH=14 - pOH.\neg. \n1mol of NaOH gives you 1 mole of OH ions.\nso the pOH = -log1 = 0\npH = 14 - 0 = 14\n\nJust some rough guide. Hopefully it helps...Good luck.
53482
warm salt-water flush
884983
Salt (or more specifically, Sodium Chloride salt) is a strong electrolyte, meaning that when dissolved in water it will completely break up into ions (Na+ and Cl- ions).\n\nPure water, by itself, does not conduct electricity, but when you dissolve an electrolyte in it, an electric current can pass through the solution.\n\nIn order for a electric current to flow there must be charge carriers which can move.  Pure water does not have these charge carriers, but after a salt is dissolved and ions are present in solution, the solution becomes conductive.
142798
i think it's salt..am i right?
209819
Add water to dissolve the salt.  Drain water and boil off.  Salt is now separated from sand.
776338
to spread salt early is a waste as cars and traffic will just throw it off the road.  salt is laid after snow or ice falls to melt the ice.\n\nmore and more its becoming common to salt brine the roads prior to a snow coming.  this is done with a mix of salt water and is laid on the ground normally in 5 straight lines.\n\nto a test of your own and you'll see why they salt it afterwards and not before with actual rock salt.\n\ntake a plate and put a layer of salt on it then lay an ice cube on it.  take another plate and lay an ice cube on it then salt over top of it.  which melts faster?