Why do chemical changes occur?
When the atoms and molecules of substances change or react with one another
When atoms and molecules react chemically against a compound
Give three examples of chemical changes
Freezing, rusting, melting
Photosynthesis, rusting, baking
True or False: Burning a sugar cube is a chemical change
True or False: Chemical Changes happen on a much smaller scale
You can cause physical changes with forces like...?
Temperature, Force, Motion
Force, Motion, Gravity
Temperature, Gravity, Motion
True or False: During a physical change new materials are formed
Physical Changes involve....
Changes of state, color, appearance, shape, texture, size and form
Changes of temperature, force and gravity
During a chemical change....
Chemical bonds are formed between the materials
No chemical bonds are formed between the materials
True or False: Chemical Changes are hard to reverse
Is energy released during physical changes?
No
Yes
Only during changes of state
How are compounds formed during chemical reactions?
When chemical reactions occur, creating the compound and it's components
When chemical bonds are formed between the elements
