Determine whether or not each metal, if coated onto iron,

Chem CHAPTER 2  Law of conservation of mass-mass is neither created nor destroyed  Law of constant composition-the elements present in a compound are the fixed and exact proportion in mass regardless of how it was prepared or what it came from  Percent composition- mass percent of each element o Found by: mass of element/mass of compound X 100  Daltons atomic theory o All matter is composed of atoms o The atoms of any element are chemically identical o Compounds are combinations of atoms of different elements and they will have different properties than the elements that make it up o Atoms are exchanged and transferred between compounds, but they cannot be created or destroyed  Hydrogen is the lightest element known (1.0); now known it is 1.008  Mass spectrometry-technique used to determine masses of atoms  Atomic masses/atomic weights- mass of the atoms aka the element o Amu=symbol for atomic mass; u=new symbol used o Now defined relative to the mass of the most common isotope of the element Carbon, whose mass is 12 atomic mass units o Mass number=sum of protons and neutrons o Mass of proton=1.00728 amu o Mass of neutron=1.00867 amu o Mass of electron=.0005486 amu  Protons and neutrons make up most of an atoms mass and are located in the nucleus; however, the electrons make up most of the volume filling up the outer shells  Ion-atom bearing a net electri