Thermal Properties

Question 1

how does thermal expansion occur in solids at constant pressure

Answer 1

the particles vibrate harder and faster, creating more space between the particles, causing them to expand.

Question 2

how does thermal expansion occur in liquids at constant pressure

Answer 2

the particles move around faster, weakening the intermolecular forces of attractions, and are thus held less closely together. The liquid expands

Question 3

how does thermal expansion occur in gas at constant pressure

Answer 3

the gas particles collide harder with the container surfaces, forcing them out, and allowing the gas to expand

Question 4

consequences of thermal expansion in daily life

Answer 4

Changing of shape and dimensions of objects such as doors. (2) Wall collapsing due to bulging. (3) Cracking of glass tumbler due to heating. (4) Bursting of metal pipes carrying hot water or steam are some of the disadvantages of thermal expansion of matter.

Question 5

what is internal energy

Answer 5

rise in temperature of an object

Question 6

formula for shc

Answer 6

energy/mass x change in temp

Question 7

formula for internal energy

Answer 7

mass x shc x change in tmp