I heat 100. grams of water from a temperature of 10.0°C to a temperature of 50.0°C. The specific heat capacity of water is 4.18 J/g°C. How much heat did I require for this process to occur?

=100×4,18×40

=16'720Joules

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance