C3 Revision OCR science

How would you separate sodium chloride in water?

D) crystallization
what does (s) (g) (l) and (aq) in a chemical word equation?

B) solid,gas,liquid and aqueous solution
what does oilrig stand for?

oxidation is loss off electrons,reduction is gain of electrons
What types of ions do non metal make?

negative ions
what is the balanced equation for H₂+O₂ --> H₂O

2H₂+O₂ -->2H₂O
If something losses electrons it is oxidised or reduced?

oxidised
when making bonds does is require energy or realises energy?

realises energy.
when doing exothermic and endothermic how would you know if the reaction is endo or exo

if its endothermic the answer will be positive but if its exothermic the answer will be negative
in a chemical equations what are both sides called

reactants and products
what is a redox reaction

a redox reaction is the gain of oxygen on the opposite side

Author

OliviaDC

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Card Set

C3 Revision OCR science

Description

revision

Updated

2017-05-11T13:54:49Z