Chemistry Flashcards
1
Q
What is sublimation?
A
The process of a solid going through a phase change directly to a gas. For example dry ice CO2 does this.
2
Q
What is deposition?
A
The opposite of sublimation. This is the process of a gas going through a phase change from gas to solid as a result of cooling.
3
Q
What is a heterogeneous mixture?
A
The composition of a hetero mixture varies from position to position, think sugar and sand in a jar.
4
Q
What is a homogeneous mixture?
A
These solutions are relatively uniform in composition. For example, sugar that is completely dissolved and mixed on water.
5
Q
Whats the atomic mass unit?
A
1.660540 x 10^-27
