reactivity Flashcards
1
Q
reactivity of metals
A
-the greater the tendency of a metal to lose ions/electrons to form its positive metal ion, the more reactive it is
2
Q
metal+water
A
->metal hydroxide+hydrogen
3
Q
metal+steam
A
->metal oxide+hydrogen
4
Q
metal+hydrochloric acid
A
->metal chloride+hydrogen
5
Q
the initial reaction of mg or al with hcl is slow at first why?
A
- they are coated with a layer of their metal oxides as they react with the o2 in the air
- can be removed using sandpaper
