Science Test
concentrated solution
a solution that contains a large amount of dissolved solute
diluted solution
dilution is a process of decreasing the concentration of a solute in a solution
dissolve
become or cause to become incorporated into a liquid so as form a solution
distillation
is the process of separating the components of a liquid mixture through selective evaporation and condensation
evaporation
the process of turning from liquid to vapor
filtration
the action or process of filtering something
heterogeneous mixture
is a mixture in which the composition is not uniform throughout the mixture
homogeneous mixture
the most common type of homogeneous mixture is a solution which can be a solid liquid or gas
insoluble
incapable of being dissolved
matter
a substance made up of various types of particles that occupied physical space
mixture
a substance made by mixing other substances together
particle
a minute portion of matter
saturated solution
a solution that has been dissolved as much solid as he can capable of dissolving
chemical substance
a substance that are made of only one kind of particle and fixed or constantion structure
solubility
the ability of a solute to dissolve in a solvent
sifting
to separate or separate out by or as by putting through a sieve
soluble
susceptibe of being dissolved in or a liquid especially water
solvent
a chemical substance that dissolves another chemical substance to form a solution of a homogeneous mixture
super saturation
a solution that contains more than the average solvent that can be dissolved a given temperature
unsaturated
a solution that contains less the maximum amount of solute that it is capable of dissolving
what is matter?
matter is anything that has weight and takes up space
matter States
solid, liquid, gas
solid
are packed so tight they don't move
liquid
there's more space between the particles allows them to slide around
gas
so much space between the constantly moving particles in a gas
postulate
are an assumption that is assumed to be true without any evidence
six men postulates of the particle theory?
all matter is made up of particles
all particles are in constant motion
all particles of one substance are identical
temperature affects the speed of which the particles move
there are spaces between the particles
particles have forces of attraction between them
what is a mixture
-is matter that is made up of two or more substances that have not been chemically bonded
-the substances are physically mixed and keep their individual properties
homogeneous mixtures
a homogeneous mixture is made up of two or more substances that have not been chemically combined and can be separated through physical methods
(examples : water and sugar)
heterogeneous mixtures
are made up of two or more substances that can be very distinguishable
(examples: salad)
pure substances
our substances that have identical particles and cannot be separated through all the materials
elements
-are pure substances that are made up of only one type of atom
-cannot be further reduced to simpler forms
(examples: server gold copper noble gases are pure and unbonded)
compounds
our combination of two or more elements chemically bonds link the atoms together making them inseparable through physical or mechanical means
water the universal solvent?
-water is the most common solvent
-it dissolves more particles than any other liquid, water can dissolve various compounds
qualitative
the amount of solute in a solvent that can describe qualitatively
quantitative
-observations are determined by the massive volume of the substance
- determine concentration by measuring the mass of the solute compared to the volume of the solvent
sorting
sorting is taking a bunch of stuff into categories based on their appearance (colour,size, composition or texture