Chapter 1 - Fundamental Ideas Flashcards
1
Q
Why do atoms have no overall charge
A
The number of protons is equal to the number of electrons and their charges are equal and opposite
2
Q
What is the atomic number
A
The number of protons (or the number of electrons)
3
Q
What is the mass number
A
The number of protons plus the number of neutrons
4
Q
What do group 1 elements react quickly with
A
Water and oxygen
5
Q
What group arse the noble gases
A
Group 0
6
Q
What happens when a metal reacts with a non metal
A
An ion is formed
7
Q
Why would a compound have ionic bonds
A
The oppositely charged ions attract each other strongly
8
Q
How are covalent bonds formed
A
When non metals combine and their atoms share electrons
9
Q
What happens when elements react
A
Their atoms join with atoms of other elements
