Physical. Physical changes include things such as changing shape or color. Chemical changes change the chemical properties of a material, often during a chemical reaction.
During a physical change the chemical molecule is not affected; physical changes are changes of phase or form.
Actually both physical and chemical changes are happening during cement mixing.
The mass.
During a chemical change the molecule is transformed; during a physical change the molecule is not transformed.
This process involve chemical reactions but also physical changes.
There are no chemical changes.
The particles that make up matter are unchanged during physical, or chemical changes. Matter can neither be created nor destroyed, only transformed.
Yes. Chemical changes are irreversible, but physical changes can easily be changed back
i believe it is the nucleus.
Both. During decay it ceases to be radium.
Papermaking is a series of physical and chemical changes. The physical and chemical changes will depends on raw material used and grade of paper manufactured. For a typical north American paper mill which uses wood for making copying paper, following changes will take place. Operation Type of Change Logging Physical Barking (Removal of bark) Physical Chipping Physical Screening Physical Cooking Chemical Washing Physical Chemical Recovery Chemical Bleaching Chemical Washing Physical Refining Physical Sizing Chemical & Physical Screening Physical Cleaning Physical Wet-end chemical addition Chemical & Physical Sheet Formation Physical Pressing Physical Drying Physical Calendaring Physical Winding Physical Rewinding Physical Cutting Physical