A student poses the question: How does the presence of disso…

A student poses the question: How does the presence of dissolved salt affect the freezing point of water? To answer this question, the student set up two conditions. In the first condition, the student added salt to water in a container and referred to this condition as the variable. In the second condition, the student did not add any salt to water in a second container and referred to this condition as the control. The student took both containers and attempted to freeze the water at various temperatures to assess the freezing point. Would this be a valid experiment?

Magnesium chloride (MgCl 2) is a salt formed with ionic bond…

Magnesium chloride (MgCl 2) is a salt formed with ionic bonds between one magnesium ion and two chloride ions. Magnesium has two electrons in its outer shell and chlorine has seven electrons in its outer shell. How are the electrons transferred between these atoms?

Fructose and galactose both have six carbon atoms, twelve hy…

Fructose and galactose both have six carbon atoms, twelve hydrogen atoms and six oxygen atoms; just like glucose. A friend of yours says: “Since those sugars have the same number of atoms, they should have the same name.” You answer: “While they do have the same number and type of atoms,