TOPIC 2 Flashcards
what is a pure substance
a pure substance contains only one type pf particle. can exist in three states of matter solid, liquid, or gas.
what is a mixture
all mixtures contain two or more pure substances. Which have their Own distinct properties.
what is a homogenous mixture
appear to be one substance particles of different substances are intermingled.
what is an example of a homogenous mixture
vinegar, clear air
what is a heterogenous mixture
Two or more parts can be seen different kinds of particles stay together
what is an example of a heterogenous mixture
soil, blood, concrete
what is homogenous also known for
a solution
what is heterogenous also known for
mechanical mixtures.
what is an example of a element
iron, gold oxygen
what is an example of compounds
water, salt, sugar
what is suspension
a heterogenous mixture, in which the particles settle slowly after mixing.
what is an example of suspension
orange juice.
what is colloid
a heterogenous mixture in which the particles do not settle at all.
an example of colloid would be
fog
to disperse the particles for a longer period of time, and emulsifying agent (like protein) is used to form an
emulsion
and example of emulsion would be
mayonaise
what are mechanical mixtures
mixtures that are obviously two or more substances are called mechanical mixtures.
what are the separate parts of the mechanical mixtures called
phases
what makes materials dissolve
Forming a solution by mixing two or more materials together is called dissolving.
how does dissolving occur
it occurs because of the attraction between the particles
when dissolving occurs there may be stronger attraction to the particles of another substance, than to the particles of the same substance. true or false
true
what is the solute
the solute is the substance that dissolves in a solvent.
what is the solvent
The solvent is the substance that dissolves the solute to from a solution
what does soluble mean
means to be able to be dissolved is a particlular solvent
solutes and solvents can be
gases or liquids
why is water called universal solvent
because it can dissolve so many materials
how much % of the water on Earth is ocean water
97%
what is agitiation
stirring or shaking helps the solutes to dissolve faster.
the limit to concentration is called
solubility
what is a saturated solution
is one in which no more solute will dissolve in a specific amount of solvent at a specific temperature
what is a unsaturated solution
is one in which more solute can be dissolved in a specific solvent at the same specific temperature
this is an example of what
a solubility chart
what is a super satureated solution
a solution that contains more solute than normally dissolve . at a certain temperature.
what does isoluble mean
not able to be dissolved in a particular solvent
what will happen when you try to add more solute to a saturated solution. Using the particle theory matter
It will become a solid because the saturated solution can not contain more solute.
certain solvents are used for special circumstances because what?
they will dissolve some solutes that water and other solvents cannot
the earth is rich in?
Natural mixtures
