Identify each of the following as either a physical change or a chemical change. Explain your answers.

A. a piece of wood is sawed in half.

B. milk turns sour.

C. melted butter solidifies in the refrigerator.

What's needed to build a neutron atom

The medium for ocean waves

How should this combustion reaction be balanced? C5Hg + O2 → CO2 + H2O

What new information did james chadwick contribute to the understanding of the atom?

Nitrogen has an atomic mass of about 14 amu and an atomic number of 7. how many neutrons does nitrogen have?

What are the common elements in a canyon?

How many carbons atoms are in propane?

This type of formula indicates the kind, number, arrangement, and bonds but not the unshared pairs of the atoms in a molecule.

What does the water inside the jar represent

What is solubility? 1) solubility is how much solute will precipitate out of solvent 2) solubility is how much solvent will dissolve in solute 3) solubility is how much solid only will dissolve in liquid only