Physics: Particle Model of Matter (P3)

solid

strong forces of attraction hold the particles vibrate in fixed positions

liquid

weaker forces of attraction irregular arraignment random direction low speed

density = (units)

mass / volume kgm

measuring density (solid)

use a ______. Measure it’s ____. Measure l x w x h to calculate volume, use density = ___ / ____

balance mass mass volume

measuring density (irregular solid)

measure the ___ fill a ____ ___ with water . The water ____ ____ it , this is equal to the ______ of the object . use density = ____ / ____

balance eureka can displaced measure volume mass volume

measuring density (liquid)

place a _____ ____ on a _______. Zero the ______. Pour ___ml of liquid and ____ it’s mass . Repeat this until the cylinder is ______ . For each measurement use density = mass / volume. take an ______ and you will get the density

measuring cylinder balance balance 10 record full average

internal energy is defined as

total kinetic energy and potential energy of all the particles in a system

heating the system transfers

energy to it’s particles increasing their internal energy causing a change in temp or state

the size of the change depends on …

mass SHC and energy input

specific/ latent heat

amount of energy needed to change 1kg of a substance without a change in temperature

when a substance is melting/boiling energy is still being ____ in so the ______ _____ is _____this _____ is used to ____ the _____between the particles.

put internal energy increasing energy break bonds

when a substance is condensing/freezing bonds are _______ between particles which ____ ____energy so the _____ ____ is _______ but the _____ doesn’t go ____ until all the substance has turned to ___ or ____

forming releases internal energy decreasing temperature down liquid solid

specific latent heat formula

energy = mass x specific latent heat

fusion

vaporisation

solid to liquid liquid to gas

particles in a gas move in …

random directions and random speeds

when the temperature of gas is increased energy is transferred into the _______ energy store

kinetic

why would a water tank explode ?

the ______ caused by _____ ______ with the _____ of the container

______ increases the s____ of the particles increasing the ________ of ________ as well as the ______ of ______

since the ______ of water tank stays ______ the pressure will ______ , eventually the pressure gets so _______ it explodes

pressure particles colliding walls heating speed frequency collisions volume constant increase high

pressure is _____ ____ to ____

boyle law

inversly proportional volume p1v1=p2v2