Monday, October 10, 2005
study study study.for science.. shall study my chem here.on my blog.lets see.. compound consists of two or more elements chemically combined together.characteristics of compund are:
the properties of a compound are different from those of its constituent elements.
the formation of compound involves exchange of heat and light energy.(chemical reaction)
the different elements in a compound are joined together in a fixed proportion by mass.
can only be broken down into simpler substances by chemical means.((:
a mixture consists of two or more substances not chemically combined.charecteristics of a mixture are:
the properties of a mixture are the properties of the substances that make up the mixture.
no chemical reaction takes place during the formation of a mixture.
the substances in a mixture can be in any proportion by mass.
can be broken down into simpler substances by physical means. :D
an element is a substance which cannot be broken down into two or more simpler substances.xD
yeaps!
let me see what i can remember.
a solution is a homogeneous substance.suspension is heterogeneous.homogeneous means same throughout. =solution and suspension.. solution and suspension.. i cant rmb!!
properties of a metal are:
sonorous.ductile.malleable.good conductor of heat.ductile means can be made into wire.malleable means can be hit into shape.or mebbe its the other way round.shiny appearance.think thats about it.
SIGHS.i go relax now.^^
