I. Completaţi enunţurile de mai jos: 1) Electronul distinctiv este electronul prin care .
2) Principiul lui Pauli precizează că .
3) Orbitalii monoelectronici sunt aceia care conţin .
4) Izotopii sunt specii de atomi care au acelaşi dar diferă prin .

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next

Wind and moving water provide energy. chemical mechanical thermal none of the above