physical and chemical changes physical change physical changes occur when matter changes its...
TRANSCRIPT
Physical and Chemical Changes
Physical Change Physical changes occur when matter
changes its properties but does NOT change the composition.
Changes what it looks like Physical changes can be “undone”
Physical changes in matter
Freezing Dissolving Cut Folded Shape Size Texture State of matter Volume Melting Mass/Weight Expected Color Change
Choose 3 Examples for your notes
Physical Change
This is a physical change because water is changed to ice. This is a liquid changing to a solid which is a change in the state of matter only.
Chemical Change
Chemical changes are changes matter undergoes when it becomes new or different matter.
Chemical changes cannot be undone Burning, Rusting and Cooking a
common examples of chemical changes
UNEXPECTED Color Change Gas Formation Precipitate Formation Temperature Change-Endothermic (inside)-Exothermic (outside)
4 signs of a chemical reaction
Chemical Change A chemical change
occurs when fireworks are used. Fireworks are made of metals such as magnesium and copper. These change chemically as they light up the sky.
Is it a chemical or physical change?
Sugar dissolving in tea
•Chemical Change
•Physical Change
Correct!
PHYSICAL!
Is it a chemical or physical change?
Logs burning
•Chemical Change
•Physical Change
Correct!
CHEMICAL!
Is it a chemical or physical change? Breaking water up by separating
it into hydrogen and oxygen
•Chemical Change
•Physical Change
Correct!
CHEMICAL!
Is it a chemical or physical change?
Cutting paper
•Chemical Change
•Physical Change
Correct!
PHYSICAL!
Is it a chemical or physical change?
Crushing an aspirin
•Chemical Change
•Physical Change
Correct!
PHYSICAL!
Is it a chemical or physical change?
Metal rusting
•Chemical Change
•Physical Change
Correct!
CHEMICAL!
Is it a chemical or physical change?
An egg rotting
•Chemical Change
•Physical Change
Correct!
CHEMICAL!