what constitutes a physical change? give examples please

Question

anonymous · Answer

someone???

anonymous · Answer

Boil water and the physical state changes from liquid to gas. Boil ice, and the water will go through the three most common states of matter.

Alternately, break a pencil. the physical force will physically change the pencil, but not change its composition.

anonymous · Answer

What constitutes a physical change is a change in appearance and constitution. [i.e.; a rock falling down and breaking. This is a physical change because it alters the object's appearance and constitution. Another example is two substances (i.e.; milk and cocoa powder) being mixed together. This changes their appearance and constitution.]

anonymous · Answer

can anyone help me with my coursework it is due tommorow please.
here is the question
explain tje scaling up to industry in terms of quantities of products made in industry?
sodium hydroxide and sodium bisulphate and Titration.