Physical changes don't destroy your sample or make it into something new. Physical changes change the shape, size or phase of a substance. Crumpling paper, getting a haircut, dissolving salt...
1 Answers 1 viewsMass is always conserved in a chemical change, which process involves involves the rearrangement of atoms and molecules. Of course most physical changes also conserve mass: when $10*g$ of liquid...
1 Answers 1 viewsPhysical changes are largely changes of state: solid to liquid to gas, etc. Chemical change involves the formation of new substances and the making and breaking of strong chemical bonds....
1 Answers 1 viewsDifferent combinations of atoms have different physical properties. For instance, when iron rusts, its melting point lowers.
1 Answers 1 views........involve the making and breaking of strong chemical bonds, and the formation of new substances. Physical changes do not fall under this umbrella, because while strongish bonds may be broken...
1 Answers 1 viewsOn the other hand, physical changes are largely , i.e. solid to liquid to gas, where chemical bonds are not explicitly broken. Note that both chemical change and physical change...
1 Answers 1 viewsPhysical changes are largely changes of state: gas to liquid; liquid to gas, etc. Chemical change is characterized by the formation of new substances, and the making and breaking of...
1 Answers 1 viewsSince 8x3=24 and since 12x3=36 you need to add 6oz of chemical B to have 24oz of chemical A and 36oz of chemical B. Take 1/3 of the total mixture...
1 Answers 1 views...i.e.. solid to liquid, liquid to gas...and vice versa. And certainly, , mass per unit volume, changes markedly upon a phase change between a condensed phase, solid or liquid, and...
1 Answers 1 viewsPhysical changes are changes in the formation or state of molecules and atoms. The arrangement of the molecules and atoms is different after the change but the chemical composition of...
1 Answers 1 views