I really need help with giant it says Earth is now known to be a round three dimensional sphere a access imaginary vertical line around which Earth spins be rotation

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

What is the independent variable in this investigation? mass volume sample number substance density