0
There could be several reasons.
1. Some may be in contact with water.
2. Some may be scratched.
3. Coinage metals are sometimes changed. Pre-1992 British decimal pennies were bronze but now they are copper plated steel.
4. Some may be in contact with different metals, forming a couple which can sometimes accelerate corrosion.
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
What materials do not corrode?
Gold, amongst others There are Roman gold coins buries for 2,000 years that look still new when dug up. Silver goes black Green goes copper Steel rusts and so on.
Why do some metals tarnish and some corrode?
eat my poo
Will a penny rust in apple juice?
Most sodas have a chemical that corrodes very reactive objects. A penny is now made from zinc which is highly reactive to soda... try this, put a tooth in coke can overnight andsee what happens
Why do metals corrode differently?
Because they have different molecular arrangements and some other metals are included in some of them.
Why do some people hoard copper pennies?
The idea is to save copper pennies because their melt value is higher than face value. If the U.S. government eventually makes it legal to melt old pennies, then said hoarders can sell their pennies at a profit.
Why do some metal corrode while others do not?
All metals corrode under the right conditions only some more easily then others. as it turn out the metals that corrode most easily are usually also the most abundant.
Why are some pennies raised more than others?
because i ate some of them
Do acids corrode metals?
Yes. Some can only corrode soft things, and some can corrode everything. But in short, all acids can corrode something. It only gets dangerous if the acid can corrode you.
What materials do not corrode?
Gold, amongst others There are Roman gold coins buries for 2,000 years that look still new when dug up. Silver goes black Green goes copper Steel rusts and so on.
What wheat pennies are collectable?
All of them are collectible, some are worth more than others.
Are some pennies thicker than others?
yes; if you look closely it is very easy to tell
Do coins corrode?
Of course coins corrode. Over time coins corrode. They corrode faster in tap water. Bleach also corrodes coins. If you have time, try some experiments and see what substances corrode coins.
Why are some plants cold and others hot?
some have peploe on it and some dont
Why do some symbol have a slash across them and others dont?
*
Why does metals corrode more quickly near the sea?
Because some metals are reactive and corrode in sea water
Why do some metals tarnish and some corrode?
eat my poo
Why do some pennies hold more water than others?
Others is simply one of those cases that possesses crucial distinction and will demand experienced watching over about
