Introduction to the particulate nature of matter - average kinetic energy

Question 1

How do you convert between celcius and kelvin?

Answer 1

K → °C = -273
°C → K = +274

Question 2

What is absolute zero?

Answer 2

0K or -273°C
Particles have zero kinetic and potential energy.
Cannot transfer any kinetic energy on collisions.
Matter cannot lose heat or get any colder.