The plum pudding model of the atom states that

a) each atom has overall negative charge.
b) each atom has dense, positively charged center.
c) an atom is a solid, invisible sphere that makes up all matter.
d) an atom is made up of electrons in a sea of positive charged.

In a good thermo flask the main cause of heat loss is

Can you match these to the correct definition

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system