Physical states點解??

IT is the state of elements under standard conditions (25C and 1 atm)
For example:
Mercury (liquid)
Chlorine ( gas)
Potassium (solid)
Aqueous is the state that elements or compound that dissolves in water.
example : HCl (aq) hydrochloric acid...

Physical state 是 solid state, liquid state, gas state.

在melting point, 同時存在solid state和liqild state.
在boiling point, 同時存在liquid state和gas state.
因為在melting point和boiling point, 物件正在changing state

放心, 唔係 d 咩深野..... 即係 solid, liquid 同 gas 咁解 jei~~ 當然 chem o黎講仲有一個叫 aqueous state 啦~