C4 Flashcards
(8 cards)
1
Q
Where is the nucleus located and what does it contain?
A
It is in the middle of an atom, contains protons and neutrons and has a positive charge because of the protons.
2
Q
Definition of isotopes?
A
Different forms of the same element, which have the same number of protons but a different number of neutrons.
3
Q
What is an ion?
A
An atom or molecule which has lost or gained electrons to become charged.
4
Q
What are group 1 metals known as?
A
Alkali metals
5
Q
What is oxidation?
A
Loss of electrons
6
Q
Alkali metal compound colours when burned for Lithium, sodium and potassium?
A
Lithium = red Sodium = yellow/orange Potassium = Lilac
7
Q
What are group 7 metals known as?
A
Halogens
(become less reactive when going down the list!)
8
Q
Definition of Reduction?
A
Gain of electrons
