Distinguish between the following: a) physical and chemical change b) metallic and non-metallic c) atom and isotope d) electron affinity and electronegativity

Hello, Tulips2411!!

A) Physical change doesn't change what the substance is. The actual physical property can change (appearance). For a chemical change, a new substance is formed and energy is given off or absorbed.

B) Metallic is the level of reactivity of a metal. Increased going down in a group. Non-metallic is the tendency to accept electrons during chemical reactions. They are increased from left to right in the periodic table.

C) Atoms are composed of protons, neutrons, and electrons. H+ (Hydrogen) atoms has 1 proton and 1 electron. Atoms that are the same element but have different number of neurons are known or referred to an isotope.

D) Electron affinity is energy that can change when a neutral atom attracts an electron to become a negative ion. Electronegativity is the ability of an atom in a molecule to draw bonding electrons to itself.

I hope I helped :)

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.