Introduction to Physical and Chemical Change (Grade 10 NSC Matric Physical Sciences): Flashcards
📚Flashcards
Practise the cards
10 cards from this deck
ShowHide
Practise the cards
10 cards from this deck
Define a physical change
Define a physical change
Matter changes form but particles remain the same
Define a chemical change
Define a chemical change
New substances formed in a chemical reaction
Bonds in physical changes?
Bonds in physical changes?
Don't break; compounds rearrange but bonds stay intact
Reversibility of physical changes?
Reversibility of physical changes?
Usually easy to reverse (e.g., filtration, temp change)
Energy changes: physical vs chemical?
Energy changes: physical vs chemical?
Chemical changes have much larger energy changes
Reversibility of chemical changes?
Reversibility of chemical changes?
Far more difficult to reverse than physical changes
Law of conservation of mass
Law of conservation of mass
Total mass remains constant
Law of conservation of atoms
Law of conservation of atoms
Number of each atom type stays the same
decomposition products
decomposition products
and
Molecule number in physical changes?
Molecule number in physical changes?
Always stays the same