solids i guess
"Fluids" are substances whose particles are not rigidly attached to each other. Thus, they can flow.
no
Yes, it is.
An insulating container prevents heat-flow through its walls ... in either direction. Its job is to keep the drink at the same temperature it was when you poured it into the flask. It doesn't need to "know" anything in order to do that. It only needs to stop heat from getting past the boundary.
Usually, gushed is used when it describes some sort of liquid being poured out, or had been poured out. Sometimes it is used when the action happens accidentally, or suddenly. "When I squeezed the bottle, water gushed out."
A gas or a liquid.
Gold will flow if it is molten enough, otherwise, gold could not be poured into moulds.
The cell membrane
Viscosity is a substances resistance to flow. So as the viscosity of a substance increases, the flow rate will decrease.
Yes, if you do not use them often and have poured sugary substances down the drain.
Fluids are substances that flow. Liquids flow, gases flow, and ionized gases (plasmas) flow. Thus, they are all fluids.
Viscosity and flow rate increases with the temperature.
Heat :)
Metallic substances have free electrons, which can move from atom to atom, transferring a charge.
Gases.
Fluids are substances that have the tendency to flow. Gases and liquids are both fluids because they both flow.
Most of the substances used in most laboratory experiments can be safely poured down a drain. However, laboratory experiments sometimes involve corrosive substances which would damage the plumbing if poured down the drain; they can also involve chemicals which, if they were to be mixed together as they are poured into the same drain, would undergo chemical reactions that might cause an explosion or a fire. And it is also possible that you are conducting experiments on highly toxic materials that would become an environmental hazard if poured down the drain. So not everything goes down the drain. You have to understand the nature of the substances that you are dealing with. Some thing go to a hazardous waste center instead, or can be neutralized in your own laboratory before you dispose of them.