1B Heat Temperature

Question 1

Thermal Energy

Answer 1

total kinetic energy of the particles in a substance due to their random motion.

Depends on the total number of particles in the substance and their kinetic energy

measured in joules (J)

Question 2

Temperature

Answer 2

the measure of the average kinetic energy of the particles in a substance.

depends on the average kinetic energy per particle

measure in Celsius (C) or Kelvin (K)

Question 3

Heat

Answer 3

the transfer of thermal energy between systems or objects with different temperatures

depends on the temperature difference and the nature of the material

measured in Joules ( J) or calories ( cal)

Question 4

Celsius

Answer 4

it is the common unit used for everyday temperature measurement in most countries. including Australia

it is based on the freezing point of water at )C and the boiling point at 100 C

absolute zero = -273.15

Question 5

Kelvin

Answer 5

it is the SI unit of temperature.

the kelvin scale is an absolute scale. this means that a zero on the kelvin scale represents the lowest temperature possible, which we call absolute zero

Absolute zero = - 0K

Question 6

Conversion between the Celsius and kelvin scales Formula

Answer 6

Tk= Tc + 273.15

Question 7

What temperature does water boil at

Answer 7

Kelvin = 373.15K
Celsius= 100C
Fahrenheit=212F