CHEMISTRY MIDDLE SCHOOL

Why do metals bend?And
What elements as a in stainless steel?
And how (%) of each element

Just answer one question if u want

Answers

Answer 1
Answer: It is the electrons moving between the metal atoms but its more to do with how metals are structured. Basically you can think of it as layers of atoms with free electrons moving around. Metals can be molded because these layers can slide around each other, so the entire metal can be made into a different shape.

This is why metals bend.
Answer 2
Answer:
Because medal can get weak when used to much!!!

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What does FE stand for in the Periodic Table of Elements?

What are the three forms of water and what are the scientific names when they change into each other

Answers

solid liquid and gas

when it changes from a:
solid
  to a
     liquid: melting, fusion
     gas: sublimation
liquid
   to a
       solid:freezing
       gas:vaporization
gas
   to a
       solid:condensation, deposition
       liquid: condensation, liquefacation
gas liquid and solid   gas is when the water evaporates.  liquid when thew water is at room temp and solid when it is cooled below 32 degrees farenheit 

Hydrogen is a liquid below what temperature?a.
100 degrees C
c.
-183 degrees C
b.
-253 degrees C
d.
0 degrees C

Answers

Answer:

  • The hydrogen exist as a liquid at -253 degree C.

Explanation:

  • Hydrogen is found as a molecular form H2. In order to become liquid , it must be cooled below its critical temperature. It become liquid at -253 degree C or 423.17  degree F or 20.8 K.
  • So hydrogen become liquid at -253 degree Celsius.
Hydrogen is a liquid below -253 degrees C

Changing the number of protons in an atom makes

A. an ion
B. an isotope

Answers

A. an ion

The atom gains a net electrical charge if the number of protons and electrons are not equal which makes it an ion.

________ use organelles called _________ in their leaves to collect _____ energy

Answers

My guess would be: Plants use organelles called chloroplasts in their leaves to collect light/solar energy.
the last one is the suns energy

How is an area's topography determined

Answers

an areas topography is determined by its landforms like rivers or mountains
Topography influences the wind patterns and the transfer of energy in an area.

Why is fusion nuclear energy currently not widely used as a source of electricity? Fusion reactions have not yet been achieved.

Fusion reactions cannot be controlled.

Fusion reactions require very high temperatures and pressure.

Fusion reaction energy cannot be converted into electricity.

Answers

Answer:

Fusion reactions require very high temperatures and pressure.

Explanation:

Fusion reactions are nuclear reactions where two small nuclei combine or fuse together to give a larger nuclei or different nuclei with some more sub atomic particles.

The source of energy in sun is fusion reaction between hydrogen to give helium nucleus.

For fusion of two nuclei , a particular energy barrier is to be overcome by the nuclei to come closer.

For this a large amount of initial energy (which is attained by high temperature and high pressure) is required. Hence this makes the candidature of nuclear fusion less favorable as compared to fission.
it’s C. fusion reactions require very high temperature and pressure
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