Among the elements magnesium, sodium and silicon, which hås the highest second ionisation energy? Explain.

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Scientific evidence tells us that the cause of earths four season is the tilt of earth as it revolves around the sun. the student is instructed to illustrate this information in a science notebook. how will the student illiterate winter in the northern hemisphere?

In one or two grammatically correct sentences, write a definition for the term molecule geometry