the particulate nature of matter - whole of B

0.0(0)
learnLearn
examPractice Test
spaced repetitionSpaced Repetition
heart puzzleMatch
flashcardsFlashcards
Card Sorting

1/24

flashcard set

Earn XP

Study Analytics
Name
Mastery
Learn
Test
Matching
Spaced

No study sessions yet.

25 Terms

1
New cards

kinetic theory of matter

all matter is made up of atoms and molecules which are in perpetual motion

2
New cards

evidence for the kinetic theory of matter

brownian motion (random motion), diffusion (collision between particles)

3
New cards

conversion from celsius to kelvin

celsius + 273

4
New cards

conversion from kelvin to celsius

kelvin - 273

5
New cards

conduction

fast moving particles transfer KE to slower particles when they collide

6
New cards

convection

occurs due to variations in density of liquids and gases

7
New cards

radiation

transfer of thermal energy as an electromagnetic wave

8
New cards

gases in atmosphere that absorb IR

H20, CO2, N2O, CH4 → have resonant frequencies in the IR region which causes them to absorb and re-emit radiation in random directions

9
New cards

intensity is indirectly proportional to

r²

10
New cards

specific latent heat

the energy required to change the phase of 1 kg of a substace without a change in temperature

11
New cards

characteristics of an ideal gas

gas particles are spherical; collisions are perfectly elastic; no intermolecular PE stored between particles; total volume of gas particles is negligible in comparison to the volume of the container; monatomic gas

12
New cards

the mole

a mole of a substance contains the same number of elementary entities as the number of atoms found in 12g of carbon-12

13
New cards

boyle’s law

pressure is indirectly proportional to volume

14
New cards

pressure law

pressure is directly proportional to temperature

15
New cards

charles’ law

volume is directly proportional to temperature

16
New cards

isobaric change

constant pressure; change in temperature; Q = ΔU + PΔV

17
New cards

isovolumetric change

constant volume; change in temperature; no work done → Q = ΔU

18
New cards

isothermal change

constant temperature; no change in internal energy → Q = W

19
New cards

adiabatic change

no (heat) energy lost or gained; ΔU = W when work is done by the system; ΔU = -W when work is done on the system

20
New cards

in the first law of thermodynamics work is positive when

net work is done BY the system

21
New cards

cyclic process

a series of stages which returns a system back to its original state

22
New cards

carnot cycle

Consists of two isothermal transformations where heat is exchanged at the same temperature as the surroundings, and two adiabatic processes where no energy is exchanged with the surroundings

23
New cards

the clausius statement

energy cannot be transferred from a lower temperature body to a higher temperature body without work being done

24
New cards

the kelvin-planck statement

energy cannot be extracted from a hot body and transferred entirely into work

25
New cards

entropy

total “disorder” of a system; during irreversible changes entropy always increases