1
Q
what is alloy?
A
it is a mixture of a metal with one or a few other elements
2
Q
why are alloys stronger than normal metals
A
- The _____ & ____ atoms have diff sizes
- Regular arrangement disrupted
- Layers of _____ atoms cannot slide over one another easily
3
Q
Which metals react with cold water
A
Mg and above
4
Q
metals that react with steam
A
Fe and above
5
Q
metals that react with acid
A
Pb and above
6
Q
metals and cold water
A
2M + H2O —-> MOH + H2
M + H2O —-> M(OH)2 + H2
7
Q
metals and steam
A
M + H2O —-> MO + H2
8
Q
metals and acid
A
M + HCl —-> MCl + H2
Chem
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