You are viewing a single comment's thread from:RE: Science Challenge # 2 - What is Aluminium Oxide?View the full contextrayne122 (54)in #steemstem • 7 years ago Answer is A. It is kind of a layer that if damaged mechanically, repairs itself later.
but is it protective? =)
What do you think layers do ?
well, first of all, they ruin the material itself as they make it thinner, right?
Yup.. But afterwards, it turn into layer.
and does it really protective? Protective from what? Oxygen only?
Air, Scratches ! :D
1.only from oxygen in the air
so, it actually re-appears thanks to scratches
=))
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