Question 19
You have seen that the metals in the middle of the reactivity series — magnesium, iron and zinc — behave differently, depending on their reactions with cold or hot water.
Complete the word equations to remind yourself how these reactions differ from highly reactive metals when they react with water.
Expected reaction: metal + water → metal hydroxide + hydrogen
- magnesium + cold water → ____ + ____ (very slow reaction)
- magnesium + hot water → ____ + ____ (vigorous reaction)
- zinc + cold water → no reaction
- zinc + hot water → ____ + ____
- iron + cold water → no reaction
- iron + hot water → ____ + ____
Complete the word equations to remind yourself how these reactions differ from highly reactive metals when they react with water.
Expected reaction: metal + water → metal hydroxide + hydrogen
- magnesium + cold water → ____ + ____ (very slow reaction)
- magnesium + hot water → ____ + ____ (vigorous reaction)
- zinc + cold water → no reaction
- zinc + hot water → ____ + ____
- iron + cold water → no reaction
- iron + hot water → ____ + ____
