Topic 2: Structure of an Atom + Ions Flashcards

1
Q

The nucleus contains positive charge, called ____, and neutral charge, called ___.

A
  • protons
  • neutrons
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2
Q

ORBITING the nucleus are ___, which are ____ charged

A
  • electrons
  • negatively
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3
Q

What does it mean when atoms are regularly electrically neutral? (2)

A
  • The number of electrons and protons are equal
  • neutrons may not be equal to these
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4
Q

What is an ion?

A
  • If an atom loses or gains and election, it is not longer neutral
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5
Q

what is an anion

A
  • if an atom gains elections and becomes a negative ion
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6
Q

What is a cation?

A

If an atom loses electrons and becomes a positive ion

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7
Q

Name some important ions (electrolytes, which dissociates in water) (5)

A
  • calcium, Ca2+
  • Sodium, Na2+
  • Potassium, K+
  • hydrogen, H+
  • Chloride, Cl-
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