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solong [7]
3 years ago
6

In physical change the make up of matter is changedWho or false

Chemistry
2 answers:
Anni [7]3 years ago
7 0

Answer:

True, but the substance is not transformed into another, the same is usually reversible.

Harrizon [31]3 years ago
4 0

Answer:

False

That is a chemical change

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In which of the following is the number of electrons the ion contains given correctly
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B. K+ has 18 electrons

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  • Ions are formed when atoms of element gain or loose electrons.
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  • Metal atoms such as potassium, magnesium and aluminium looses outer most electrons to positively charged ions.
  • <u>Potassium atom has 19 electrons, 19 protons, with an electronic configuration of 2 : 8 : 8 : 1.</u> <u><em>To form an ion, K looses an electron to form a positively charged potassium ion (K+) with 18 electrons and 19 protons and an electronic configuration of 2:8:8.</em></u>
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Explanation:

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