Generally no, most liquids are bad conductors due to their long range order. For instance, the specific heat of an element in it's liquid phase is usually higher than in the gaseous or solid phase.
Solids do conduct heat better than gases, although not necessarily better than liquids. Some solids are actually composite materials, because they can have a porous structure which contains gas within the solid, and this results in solids that do not conduct heat very well. But it is the gas component which has this insulating property.
Because they conduct heat less efficiently than do liquids or solids.
All objects conduct heat to some degree, even though some conduct it better than others. Objects are made out of matter, and that is the only requirement. If you want to know what an object would need to be made out of in order to conduct heat efficiently, that would be another question. Generally speaking, solids and liquids conduct heat better than gases so. Solids that contain trapped gas within them do not conduct heat as well as solids that don't.
Solids are better heat conductors than liquids because in solids, particles are closely packed together and can transfer heat more easily through vibrations. In liquids, particles are more spread out and move more freely, making it harder for heat to transfer effectively. Additionally, solids generally have higher thermal conductivity compared to liquids.
Liquids conduct heat better than gases because they are more dense; heat is conducted on a molecular level, so if you have more molecules per cubic centimeter, you will have more heat conduction.
Since most of the time we are concerned with heat being transferred via conduction, the denser the material, the easier it is to conduct heat. Except for the rare anomaly (think ice vs liquid water) solids are denser than their corresponding liquid forms. All that is a gross simplification of course. Many liquids heat quite a bit better than solids and convection (which can occur in liquids but not solids) can greatly aid in the speed of "heating up", so the generalization that solids heat up faster than liquids is only a tendency rather than a rule.
In liquids particles are more loosely packed so heat can flow through more ease.
Heat them.
In general, liquids heat up faster than solids because molecules in liquids are able to move and transfer heat more freely than molecules in solids, which have a fixed structure. This allows heat to be distributed more evenly and raise the temperature of liquids more rapidly.
Solids ---heat---> Liquids ---more heat---> gases
Yes, liquids can conduct heat. The way liquids conduct heat varies based on their thermal conductivity, which is a measure of how well a substance can conduct heat. Liquids such as water have lower thermal conductivity compared to solids like metal, but they still have the ability to transfer heat through conduction.
by convection