Asap
definitions for physical and chemical change

-at least six examples for each type of change
-methods scientists use to determine if a change was physical or chemical
-lists of observable changes that suggest a chemical or physical change has occurred

explanation:

i think option no d is the correct answer

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.