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Marrrta [24]
2 years ago
15

Why must soft iron be used with an electromagnet?

Chemistry
2 answers:
7nadin3 [17]2 years ago
8 0
The soft iron<span> inside the coil makes the magnetic field stronger because it becomes a magnet itself when the current is flowing. </span>Soft iron is used<span> because it loses its magnetism as soon as the current stops flowing.</span>
blondinia [14]2 years ago
3 0

Answer: it is easily magnetized

Explanation:

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1- The correct answer is C :


the elements arranged in the modern periodic table by increasing atomic number.


The explanation:


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2- The correct answer is C:


strontium, magnesium, calcium, beryllium are the elements which have similar properties.


The explanation:

-strontium, magnesium, calcium, beryllium, these belong to the alkaline earth metal group.

Because the outer electron structure in all of these elements is similar, they all have somewhat similar chemical and physical properties .

3- The correct answer is A :


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The explanation:


-The elements potassium and sodium have similar chemical properties because they have the same number of valence electrons and form +1 ions.



4- The correct answer is D


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Mendeleev didn't include helium, neon, and argon in his periodic table because these elements had not yet been discovered.


5- The correct answer is B:


The periodic law describes trends seen across periods within the periodic table.


The explanation:


When the chemical elements are arranged, there is a pattern called the “periodic law” in their properties, in which elements in the same column (group) have similar properties


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