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Description
Flashcards by Rachel Brown, updated more than 1 year ago
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Created by Rachel Brown
over 9 years ago
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| Question | Answer |
| When is a new substance always formed? | In a Chemical Reaction. |
| Are Chemical Changes reversible or irreversible? | Irreversible |
| How can you tell that a Chemical reaction has occured? | There is a: Colour Change A gas is given off Most involve a Energy Change |
| In a displacement Reaction if there is a big difference between the reactivity of the two metals, what will happen to the temperature? | There will be a temperature increase than if the metals are similar in their reactivity. |
| What will happen to the temperature if there is no chemical reaction? | There will be no temperature increase. |
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