Topic 2: Structure of an Atom + Ions Flashcards
1
Q
The nucleus contains positive charge, called ____, and neutral charge, called ___.
A
- protons
- neutrons
2
Q
ORBITING the nucleus are ___, which are ____ charged
A
- electrons
- negatively
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
4
Q
What is an ion?
A
- If an atom loses or gains and election, it is not longer neutral
5
Q
what is an anion
A
- if an atom gains elections and becomes a negative ion
6
Q
What is a cation?
A
If an atom loses electrons and becomes a positive ion
7
Q
Name some important ions (electrolytes, which dissociates in water) (5)
A
- calcium, Ca2+
- Sodium, Na2+
- Potassium, K+
- hydrogen, H+
- Chloride, Cl-