A student investigates the displacement reactions between four metals (WWW, XXX, YYY, and ZZZ) and their corresponding metal oxides. The results of these experiments are summarized in the table below.
Key: ✓\checkmark✓ = reaction occurs, ×\times× = no reaction occurs
| Oxide of WWW | Oxide of XXX | Oxide of YYY | Oxide of ZZZ | |
|---|---|---|---|---|
| Metal WWW | — | ×\times× | ×\times× | ×\times× |
| Metal XXX | ✓\checkmark✓ | — | ✓\checkmark✓ | ✓\checkmark✓ |
| Metal YYY | ✓\checkmark✓ | ×\times× | — | ×\times× |
| Metal ZZZ | ✓\checkmark✓ | ×\times× | ✓\checkmark✓ | — |
What is the correct order of reactivity of the metals, from most reactive to least reactive?
X,Z,Y,WX, Z, Y, WX,Z,Y,W
X,Y,Z,WX, Y, Z, WX,Y,Z,W
W,Y,Z,XW, Y, Z, XW,Y,Z,X
Z,X,Y,WZ, X, Y, WZ,X,Y,W
41 exam-style questions on OCR GCSE Chemistry Predicting chemical reactions. Each one has a worked solution and a mark scheme showing where the marks go.