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Fire does not melt plastic. Fire creates the thermal energy, heat energy, melts plastic.
Point Counter Point was created in 1928.
Opening a soda can/bottle is a physical change. A good way to figure this out is to ask- can the change be reversed? Soda is formed when carbon dioxide (CO2) gas gets mixed with the flat soda to cause the bubbly fizz. When soda can is opened the pressure causes the CO2 to create an explosion of bubbles. Soon after the soda 'calms down' it eventually becomes flat. this flat soda can once again be 'injected with carbon dioxide to become bubbly.
Any antidote
Polonium is not sold on the counter.
A pysical property is like this: You take a stapler and bang it on the counter. It would be a broken stapler but it is still a stapler. It is still metal. Or even if you sawed it in half. It is still metal but it is metal in two pieces. A chemical property is like this: You take a block of wood and burn it. It is now ash. You have changed the material. Chemical changes are rarely reversable. You have taken wood and changed it into ash.
Evaporation is a physical change.
As you may know, determining whether a change is chemical or physical can sometimes be a real pain! This particular change is a hard one. If your talking about butter slightly melting on a hot day because it was left out on the counter, THAT is a physical change and is reversible by simply putting the butter into the fridge. However, melting butter on the stove and having it completely turn to liquid and turn a little brown, THAT is a chemical change and is hard to reverse... a chemical change has occurred while the butter was over the heat.
A physical property can be observed without changing the chemical composition of the substance. A chemical property can only be observed during a chemical change in which the chemical composition of the substance changes.
Ripening is a chemical process.
Chemical
Counter-current flow is more efficient then parallel flow. Shahzad, MUET Chemical Engineer
man-trap
deter, delay, deny and detect
scintillation counter. APEX
This is a legal question which must be referred to an attorney for clarification.
A physical security counter measure would be a back up plan. A back up plan is instituted if there is a failure of the main plan.