chemestry Flashcards
properties of metals
shiny
conduct heat
conduct electricity
conduct heat
bendy
strong
properties of non metals
dull
brittle
most are gasses
they have a low boiling point
whats on the left of the periodic table
metals
whats on the right side of the periodic table
non metals
what are rows
periods
what are columns
groups
what are group 1 on the periodic table
alkali metals
what are alkali metals
very reactive
reactivity increases down the group
all react with water to make the metal hydrogen oxide
what is group 7 called
halagons
what are the properties of halagons
very reactive
reactivity decreases down the group
whats group 8 or 0 called
the noble gasses
what are noble gasses
very unreactive
boiling point decreses down the group
they have a full shell of electrons
what are elements
pure substances
whats are mixtures
contain 2 or more different substances that are not chemically joined together
what is a compound
contain 2 or more different substances witch are chemically joined together
whats dissolving
its when solids seem to disappear in liquids
whats it called when solids devolves
soluble
whats it called when solids cant dissolve
insoluble
whats a solute
the solid that dissolves
whats a solvent
the liquid it dissolves in
whats a solution
the mixture of the solute and solvent
what does saturated mean
when the solid cant desolve any more
what happens when salt dissolves in water
it mixes with the water to make a salution
what is chromatography
separating different colors from a substance
how to test chromatograthy
you put a base line on a piece of paper pencil not pen then on the line ad a dot of ink (a pen)place the paper in the water but above the line and see different colors coming out of the pen dot and up the page
whats the difference between sulfur and iron and iron sulfide
iron sulfide is a compound as it is chemically joined together and sulfur and iron is a mixture as its not chemically joined together
whats the highest on the reactivity series
potassium
whats at the bottom of the reactivity series
platinum
if there was 3 test tubes witch all had hydroponic acid in it if you put zink in one silver in one and sodium in one whats the most reactive
sodium as its higher on the reactivity series
if potassium was put in hydroponic acid what would happen
it would bubble vigorously and will even have a lilac
how do you balance the equation sodium and oxygen
firstly you would put it in to a symbol equation so Na+O2—–>
then you would do NA+O2 witch is NA02
and because there is a 2 near oxygen and you cant change the little numbers so you would put a big 2 in front of the equation to make it equal
whats a displacement reaction
its an equation like zink+ copper sulfate what you do is look at zink and copper and then look at the reactivity series and look at what is higher on it whatever is higher takes over in this case it is zink so the equitation will be zink sulfide
where are metals found
in ores
what are ores
rocks that contain metals
where do most metals exists
in the earths crust
whats the biggest piece of ceramic in your home
a toilet
what are properties of ceramics
strong hard and durable and brittle
what is a composite
2 different materials combined
whats the point in composites
to create a material that has different abilities for different things
what does synthetic mean
man made
