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 :)

you didnt put any of the following

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock