3 years ago

Why do metals change in appearance over time?

1 answer:

5 0

The exterior surface of metal can be changed by many chemical reaction takes place the reaction is carried out by presence of oxygen and water in air which Demage shiny surface of metal. The other processes can also be involved as pollution, moisture and environmental change can also effect on the surface of metal.

If metal is keept in open environment for a long time moisture contents in air boats the corrosion and rusting of metal processes.

Hopefully you will understand.

You might be interested in

What interactions are responsible for maintaining quaternary protein structure? Select all that apply.

sp2606 [1]

The ones that apply are A and C

4 0

3 years ago

Can a molecule have polar bonds, but still be a no polar molecule?

My name is Ann [436]

A molecule can possess polar bonds and still be nonpolar.

I hope this helped. Have a nice day, make sure to take care of yourself. You're loved <3

5 0

4 years ago

Read 2 more answers

Which is true of electric cars?

lianna [129]

Answer:

they produce no DIRECT emissions

Explanation:

that is why they are good in cities to reduce air pollution . but sometypes can produce lesser emissions.

3 0

3 years ago

A compound with the empirical formula CH 2 O has a formula mass of 180 g/mol. What is its molecular formula

olga nikolaevna [1]

Empirical formula mass

12+2(1)+16
28+2
30g/mol

Molecular fornula mass:-180g/mol

n=Molecular formula mass/Empirical formula mass
m=180/30
n=6

Molecular formula:-

n×Empirical formula
6(CH_2O
C_6H_12 O_6

5 0

2 years ago

An asteroid in space has traveled 4,500 km in 60 s, what is the average speed of the asteroid?

weqwewe [10]

The average speed is 75 Km per hour. Remember the equation for speed is Speed = Distance divided by Time

6 0

3 years ago