NLN Pax RN Basic Chemistry QUESTIONS AND ANSWERS RATED A+ 2025|2026 UPDATE

MATTER Atomic Structure, Isotopes, Ions, and the Periodic Table Ans- a substance that has mass and occupies space. SUBSTANCE Atomic Structure, Isotopes, Ions, and the Periodic Table Ans- matter that has the same composition and properties throughout ELEMENT NLN Pax RN Basic Chemistry QUESTIONS AND ANSWERS RATED A+ 2025|2026 UPDATEAtomic Structure, Isotopes, Ions, and the Periodic Table Ans- 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 Ans- is equal to the number of protons found in the nucleus. MASS NUMBER Atomic Structure, Isotopes, Ions, and the Periodic Table Ans- number of protons and neutrons (nucleons) in the nucleus of an atom ISOTOPE Atomic Structure, Isotopes, Ions, and the Periodic Table Ans- atoms of the same element with the same atomic number but with different numbers of neutrons ATOMIC MASSAtomic Structure, Isotopes, Ions, and the Periodic Table Ans- 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 Ans- atom that has a positive or negative charge ATOM Atomic Structure, Isotopes, Ions, and the Periodic Table Ans- 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 Ans- 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 Ans- a positively charged ion