Which of the following is not a physical property of a rock? A. luster
B. electrical conductivity
C. melting point
D. density

When will le chatelier's principle come into effect? at the beginning of a reaction, when there are only reactants when a reaction has reached chemical equilibrium when a catalyst is added to a reaction mixture when a reaction is occurring but not yet at equilibrium

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

Two atoms interact with each other as shown by the equation. complete the equation by filling in the missing parts. 1 2 3 4 5 h he li