Atoms and Elements

Learn about atoms, elements, and their building blocks!

What is your name? First and Last Please What hour are you in? 1 5 6 7 Fill in the blanks by clicking on the blank, then choosing the correct term. Atoms with the same number of protons and electrons (positives and negatives) are considered to be neutralatoms. Protons are found in the nucleusof an atom, while electrons are found in the electron cloud. Neutronsand protons make up the nucleusof an atom. Where is most of an atom's atomic mass? In the nucleus In the electrons cloud Atoms do not have atomic mass It cannot be determined How can you determine an atom's atomic mass? Add the protons and electrons together Add the protons and neutrons together Add the electrons and neutrons together It cannot be determined Which element is pictured below? Hydrogen Helium Lithium Beryllium Boron Which element is pictured below? Sulfur Phosphorus Gallium Magnesium Electrons are outside the nucleus and have a negative charge. True False Match the subatomic particles with their charge and mass. protons positive, 1 amu neutrons neutral, 1 amu electrons negative, 0 amu What element contains 16 protons? Sulfur Oxygen Chlorine Potassium What is a definition for an ion? an atom that has a different number of electrons than protons, so it has a charge. an atom that has the same number of electrons than protons. What is a definition for an isotope? atoms that have the same number of protons but different numbers of neutrons atoms that have the same number of protons and neutrons atoms that have the same number of protons and electrons