Unit 1 Module 3 - Thermal Physics Flashcards
1
Q
What is density?
A
Mass per unit volume
2
Q
What is phase?
A
Phase means whether a substance is a solid, liquid or a gas
3
Q
What is the order of density?
A
Solids>Liquids>Gases
4
Q
Why isn’t the temperature and pressure of solids and gases aren’t given when measuring density?
A
They have little effect on the density of the solid and liquid
5
Q
According to molecular spacing, what is the definition of density?
A
density=mass of one molecule in kilograms x number of molecules in a cubic metre
6
Q
What is the equation for the total number of molecules in a cubic metre?
A
1/x^3 where x is the length of the box in which the atom is
7
Q
What is the spacial arrangement of atoms in a solid?
A
Pyramidal
8
Q
What is the arrangement of gas molecules?`
A
There is none - it’s chaotic
