NLN Pax RN Basic Chemistry Questions and Answers 100% Correct

NLN Pax RN Basic Chemistry Questions and Answers 100% Correct MATTER Atomic Structure, Isotopes, Ions, and the Periodic Table a substance that has mass and occupies space. SUBSTANCE Atomic Structure, Isotopes, Ions, and the Periodic Table matter that has the same composition and properties throughout ELEMENT Atomic Structure, Isotopes, Ions, and the Periodic Table any substance that cannot be broken down into simpler substances. Identified by its symbol and its atomic number. ATOMIC NUMBER Atomic Structure, Isotopes, Ions, and the Periodic Table is equal to the number of protons found in the nucleus. MASS NUMBER Atomic Structure, Isotopes, Ions, and the Periodic Table number of protons and neutrons (nucleons) in the nucleus of an atom ISOTOPE Atomic Structure, Isotopes, Ions, and the Periodic Table atoms of the same element with the same atomic number but with different numbers of neutrons ATOMIC MASS Atomic Structure, Isotopes, Ions, and the Periodic Table The atomic mass may be considered to be the total mass of protons, neutrons and electrons in a single atom. ION Atomic Structure, Isotopes, Ions, and the Periodic Table atom that has a positive or negative charge ATOM Atomic Structure, Isotopes, Ions, and the Periodic Table smallest unit of an element that still retains the properties of that element consists of thre subatomic particles. PROTON Atomic Structure, Isotopes, Ions, and the Periodic Table a subatomic particle that has a positive charge and that is found in the nucleus of an atom CATION Atomic Structure, Isotopes, Ions, and the Periodic Table a positively charged ion ANION Atomic Structure, Isotopes, Ions, and the Periodic Table a negatively charged ion VALENCE ELECTRON Atomic Structure, Isotopes, Ions, and the Periodic Table Electrons found on the outer shell of an atom which can combine with other atoms to form molecules PERIODIC TABLE Atomic Structure, Isotopes, Ions, and the Periodic Table A table that shows the elements, their atomic number, symbol, and average atomic mass; elements with similar chemical properties are grouped together. PERIOD Atomic Structure, Isotopes, Ions, and the Periodic Table a horizontal row of elements in the periodic table GROUP Atomic Structure, Isotopes, Ions, and the Periodic Table Vertical column of elements in the periodic table, Contains elements with similar properties because of their simlar electron configurations. NEUTRON Atomic Structure, Isotopes, Ions, and the Periodic Table subatomic particle with no charge and a mass about equal to a proton and found in the nucleus ELECTRON Atomic Structure, Isotopes, Ions, and the Periodic Table negatively charged particle and are found outside the nucleus and arranged according to their energy level METAL Atomic Structure, Isotopes, Ions, and the Periodic Table a chemical element that is a good conductor of both electricity and heat and forms cations and ionic bonds with non-metals. Found on the left side of the periodic table. ex. gold METALLOID Atomic Structure, Isotopes, Ions, and the Periodic Table an element that has some of the characteristics of metals and some characteristics of nonmetals, and are semiconductors, located in between the groups of metals and non-metals on the periodic table. ex. arsenic NONMETAL Atomic Structure, Isotopes, Ions, and the Periodic Table -an element that is a poor conductor of heat and electricity -poor conductors of heat and electricity when compared to metals -usually have lower densities than metals non-metals have high electronegativity ex.