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What are ions?
Charged particles. Can be positively or negatively charged
What happens when an atom loses or gains electrons?
it becomes an ion
What happens when metals lose electrons?
they become positively charged ions
What happens when non- metals gain electrons?
They become negatively charged ions
Do group 1 and 2 elements lose or gain electrons?
Lose electrons.
Do group 6 and 7 atoms pose or gain electrons?
Gain electrons
What charge do group 1 elements have?
+1
What is the half equation for a group 1 atom?
Li --> Li+ + e-
What is the charge of a group 6 atom?
-2
What is the half equation for a group 6 atom?
Br + e- --> Br-