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Ede4ka [16]
3 years ago
9

Why do metals lose shine but gold does not?

Chemistry
2 answers:
Gennadij [26K]3 years ago
7 0
This is because gold is melted using the outer most part of the candle flame which has complete combustion whereas metals are not burnt in this way and they react with oxygen to produce metal oxides and so the metal as well as silver loses it shine and gets a blackish appearance whereas gold remains shiny throughout because it does not have reaction with oxygen.
morpeh [17]3 years ago
3 0
Because <span>Gold is a very inert metal, and won't really react with oxygen in the air.

The only reason other metals tarnish, such as copper, silver, steel/iron, is

because they're freely reacting with air, to produce a metal oxide surface layer. </span>
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After developing your hypothesis, the next step in the inquiry process is to design a controlled experiment in order to test you
Roman55 [17]
For your experiment, you would need to see decide what your hypothesis is before you design the experiment. If you want to see if the volume of gas changes depending on the container it's in, then you need to set it up depending on what you want to do with the volume.
The manipulated variable would be whatever you change, so if you switch container sizes, that would be the manipulated variable and the responding variable would be the volume of the gas.

I hope this helps!
6 0
3 years ago
Can someone please help me with my science research I kind of need help in a few things that I listed, I’m currently working on
dalvyx [7]

Answer:

For your first question, Curium does not occur naturally on Earth, meaning that it is not produced naturally on Earth. However, it can be formed in nuclear reactors.

For your second question, Curium has been used to provide power to electrical equipment used on space missions, but doesn't seem to be that important overall.

Explanation:

Hope this helped!

7 0
2 years ago
How many orbitals are in the n=3 level
solniwko [45]

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7 0
3 years ago
Read 2 more answers
9. Sodium reacts with water to produce sodium hydroxide and hydrogen gas, as shown below.
saveliy_v [14]

Answer:

B

Explanation:

2Na + 2H2O2==NaOh + H2

184/23=x/18

x=(184×18)/23

x=144g

4 0
3 years ago
What is the function of stomata in plants?
melomori [17]

Answer:

Small holes in plants that allow carbon dioxide in and oxygen and water vapor out

Explanation:

Stomata are tiny holes that open and close for the plant to breathe.

6 0
3 years ago
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