What is the number of valence electrons in the outermost energy level of an element in goup 15a?

Which wind belt flows over the united states

Aluminum sulfate is formed when an aluminum cation that has a 3 + charge combines with a sulfate ion that has a 2 - charge. Write the formula for the compound aluminum sulfate. Font Sizes

Examples of pure and impure substances

Which process of the water cycle occur by releasing energy?

1. What is the difference between science and pseudoscience?

Atoms or groups of atoms with a negative charge

What is true when two reactants combine in an exothermic reaction?

William Tell had only one son and had to shoot an apple from the top of his son's head with his bow and arrow. If you were William Tell and you loved your son, would you rather be accurate or precise?

Sugar burns when heated on a skillet physical or chemical change

What other means of qualitative analysis are used to identify metals