Fundamentals Flashcards
0
Q
How is am atom made up?
A
Tiny nucleus with electrons surrounding it.
1
Q
How many types of atoms make up an element?
How many types make up a compound?
How are compounds held together?
A
- One type
- more than one type
- Bonds
2
Q
The periodic table:
What are columns called?
What are rows called?
Elements in a group have…
A
Columns- groups
Rows- periods
… Similar properties
3
Q
Protons, neutrons and electrons:
Where are they found?
What are their charges?
A
Protons and neutrons are found in the nucleus, electrons obit the nucleus.
Protons +1
Neutrons 0
Electrons -1
4
Q
What is the atomic number?
A
The number of protons in the nucleus
5
Q
What is the mass number?
A
The number of neutrons plus protons.
6
Q
How are electrons arranged?
A
In energy levels or shells around the nucleus.
7
Q
What is ionic bonding?
A
- when a metal and a non metal bond
- metals form positive ions
- non metals form negative bonds
- opposite charges attract
- a giant lattice is formed
8
Q
What is covalent bonding?
A
- when 2 non metals bond
- outermost electrons are shared
- a pair of shared electrons form a bond
