I think it can be explained by the fact that when you put salt into water, salt molecules NaCl divide themselves into ions : Na+ and Cl- . As they carry an electrical charge, they are put in motion by the electrical field created by the generator (a battery for example), thus a current can flow in salted water and it is said that salted water conducts electricity. It's a bit the same thing in metals for electrons, which carry a negative charge. Sugar molecules do not divide themselves into ions when they are put into water, they remain neutral, so they cannot participate to conduction.
Sugar is a molecular compound which in most cases cannot conduct electricity underwater. The salt is ionic so it can conduct electricity underwater.(Kind of like a summary)
In water, the application of a voltage results in the movement of charges, but the charges are not nearly-free electrons as they are in metals. Rather the charges are ions (charged atoms or molecules). In pure water, the ions that are moving are the protons in the form of H3O+ and hydroxide ions, OH-. In other ionic solutions it is the dissolved ions themselves, for instance in salt water, sodium chloride dissociated into the ions Na+ and Cl-.
A solution of sugar doesn't ionise at all, while table salt ionises in two ions per molecule:
(NaCl)solid --> (Na+)aq + (Cl-)aqFor conductance of electricity there should be free ions to move towards respective electrode , in solid salt ions are held together in crystals and can not move freely in solutions crystals become dissolved and form free ions to move.
Sugar dissolves in water because water molecules disrupt the hydrogen bonds between the molecules and surround them, thus breaking the overall substance apart. Table salt, however is an ionic compound known as sodium chloride (formula NaCl). It is formed of ions, which are charged particles. These are broken apart in much the same way as sugar, but the ions in solution remain charged.
Electrical conduction is the movement of charged particles, referred to as charge carriers, in a given direction. Sugar is not charged, so its movement is not affected by a potential difference and it does not conduct electricity. When a salt solution has a potential difference applied to it, however, the charged particles move through the solution to the relevant electrodes, causing a current to be passed through it.
Because sodium chloride is an ionic compound; in water solution, after dissociation, ions as Na+ and Cl- exist. Sugar is dissociated in water.
The salt solution is an electrolyte, contain ions; solid salt is neutral and not dissociated.
Water is a better conductor.
Ionic compounds conduct electricity when dissolved in water.
For a fluid to conduct electricity, it must contain ions. Ions carry electrons through the fluid, making the fluid a conductor. Sugar (C6H12O6) does not conduct electricity because the molecule is non-polar. When it is mixed with water, no ions are formed because water, a polar molecule, will not dissolve this compound by the principle "like dissolves like". Because there are no ions in this mixture, sugar will not conduct electricity.
well mainly they are just metals that conduct electricity and do not dissolve in water!!!!
No mobile charged particles are present in sufficient concentration.
Yes, that is correct.
yes it does
Ionic compounds conduct electricity when dissolved in water.
No, sugar does not conduct electricity because it can not ionize, so it does not carry a charge.(in the matter of dissolving it in water!)
For a fluid to conduct electricity, it must contain ions. Ions carry electrons through the fluid, making the fluid a conductor. Sugar (C6H12O6) does not conduct electricity because the molecule is non-polar. When it is mixed with water, no ions are formed because water, a polar molecule, will not dissolve this compound by the principle "like dissolves like". Because there are no ions in this mixture, sugar will not conduct electricity.
Ionic compounds generally dissolve in water dissociating to give ions that are free to move and conduct electricity. Molten ionic compounds also have free ions and conduct electricity. Ionic compounds generally do not conduct electricity in the solid form.
Physical changes
Yes
No, pure water does not conduct electricity because there are no other solutions present. For the water to conduct electricity, there has to be an electrolyte. Salt water, Tap water, and sugar water do conduct a little electricity because they contain soluble ionic compounds.
True
If a compound dissolves into water and allows for the conductance of electrical current its said to be ionic and an electrolyte. Sodium chloride (NaCl) or table salt exhibits this property. Sugar is a compound that will dissolve in water but not conduct current. Sugar is not an electrolyte or ionic; rather a covalent molecule.
well mainly they are just metals that conduct electricity and do not dissolve in water!!!!
Nope. Sugar water doesn't carry or conduct electricity.