temperature 🤒

Question 1

define temperature

Answer 1

temperature is a measure of how hot or cold an object is (K)

Question 2

define heat

Answer 2

transfer of thermal energy from a region of hotter temperature to a region of cooler temperature (J)

Question 3

process of constructing a temperature scale

Answer 3

1) choose an appropriate thermometric substance which have physical properties which vary continuously and linearly with temperature
- eg volume of a fixed mass of a liquid / electrical resistance of wire (resistance thermometer) / electromotive force (thermocouple)
2) calibrate the thermometer by choosing two fixed points and recording the values of properties
3) set up the scale: divide the interval between two fixed points into a suitable number of equal divisions

Question 4

what is ice point?

Answer 4

the temperature of pure melting ice at atmospheric pressure (assigned the value of 0 degrees celsius)

Question 5

what is steam point?

Answer 5

the temperature of steam from pure water boiling at atmospheric pressure (assigned the value of 100 degrees celsius)