Lt1 Flashcards
What are the different states matter can be in
Gas, Solid and Liquid
What is a Compound
A group of more than one atoms of more than one type
How is a atom held together
By electric forces
The atomic number is determined by how many ____ an atom has
Protons
What is the outermost shell of an atom called
Valence shell
Where are the electrons with the most energy found
Valence shell
What is the most electrons you can have in the valence shell
8
How many valence electrons do conductors have
1-3
How many valence electrons do semi-conductors have
4
How many electrons do insulators have
5-8
Are protons positive or negative
Positive
Are electrons positive or negative
Negative
When a atom has equal protons and electrons it is ____
Neutral
When a atom has a surplus of electrons it is ____
Negatively charged
When a atom has a deficit of electrons it is ____
Positively charged
