Chemicals of the Atmosphere Flashcards
1
Q
What is dry atmospheric air made from?
A
78% nitrogen
21% oxygen
1% argon
and approximately 0.04%
2
Q
What chemicals made up the atmosphere?
A
Non-metal elements
Molecular compounds made from non-metal elements
3
Q
What about the structure of the molecules explains the low boiling points of the atmosphere’s gases?
A
- Gases have small molecules with weak forces of attraction between them
- Only small amounts of energy are needed to break these forces
4
Q
What doesn’t pure molecular compounds do?
A
Conduct electricity because their molecules aren’t charged
5
Q
What are the atoms within molecules connected by?
A
Strong covalent bonds
6
Q
What happens in a covalent bonds?
A
- The electrons are shared between the atoms
- a strong, electrostatic attraction is created between each positive nucleus and the shared pair of negative electrons
