Explain why sharpening a pencil is different type of physical change than freezing water to make ice cubes

Adepositional also feature that forms where a stream enters a lake or an ocean is a

Draw any one of the skeletal structures of a 2° alkyl bromide having the molecular formula of c6h13br and two stereogenic centers. indicate chirality by using wedge and hashed wedge notation. lone pairs do not need to be shown.

State one important difference between a physical change and a chemical change?