1647500
Frage 1
Frage
Why do chemical changes occur?
Antworten
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When the atoms and molecules of substances change or react with one another
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When atoms and molecules react chemically against a compound
Frage 2
Frage
Give three examples of chemical changes
Antworten
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Freezing, rusting, melting
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Photosynthesis, rusting, baking
Frage 3
Frage
True or False: Burning a sugar cube is a chemical change
Antworten
- True
- False
Frage 4
Frage
True or False: Chemical Changes happen on a much smaller scale
Antworten
- True
- False
Frage 5
Frage
You can cause physical changes with forces like...?
Antworten
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Temperature, Force, Motion
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Force, Motion, Gravity
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Temperature, Gravity, Motion
Frage 6
Frage
True or False: During a physical change new materials are formed
Antworten
- True
- False
Frage 7
Frage
Physical Changes involve....
Antworten
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Changes of state, color, appearance, shape, texture, size and form
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Changes of temperature, force and gravity
Frage 8
Frage
During a chemical change....
Antworten
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Chemical bonds are formed between the materials
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No chemical bonds are formed between the materials
Frage 9
Frage
True or False: Chemical Changes are hard to reverse
Antworten
- True
- False
Frage 10
Frage
Is energy released during physical changes?
Antworten
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No
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Yes
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Only during changes of state
Frage 11
Frage
How are compounds formed during chemical reactions?
Antworten
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When chemical reactions occur, creating the compound and it's components
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When chemical bonds are formed between the elements
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