Chemical final grade nine reveiw Flashcards
how to calculate the concentration
1work out the chemical formula of the solute
2 work out the mass of one mole of the solute
3 work out how many moles are in a given mass
4 convert the amount of moles in a given volume(the solvent) to 1,000 cm (1 dm)
Concentration units
mol/dm squared
what do acids do with their protons
donate them in reactions
What can aluminum and zinc do with reactions of bases
they can neutralize both acids and bases
what is one mole of gas at room temprature
24,000 cm2
what is a mole
is the mass of a substance that contains 6.02 times 10 to the 23rd power atoms/molecules of that substance
why can carbon dioxide be collected by downward displacement
becuase C02 is denser than the air around it
why can C02 be collected by displacement of water
C02 has very low solubility so it will not dissolve in the water
what are metal oxides at room temprature
solids
are metal oxides bases or acids
bases,when the dissolve they form a alkali solution
what is Mg0
a white powder
what is being bonded in covalent bonding
two non metals
what is being bonded in ionic bonding
a metal and a non metal
what is ionic bonding melting an boiling points
high
what is ionic bonding solubility in water
some
what is ionic bonding conductivity as a solid
no
what is ionic bonding conductivity in a solution
yes
what is giant covalent bonding conductivity in a solution
no
what is covalent bonding conductivity in a solution
no
what is metallic bonding conductivity in a solution
no
what is giant covalent bonding conductivity as a solid
no,except graphite
what is covalent bonding conductivity as a solid
no
what is metalic bonding conductivity as a solid
it can
what is giant covalent bonding melting an boiling points
high
what is covalent bonding melting an boiling points
low
what is metalic bonding melting an boiling points
high
what is giant covalent bonding solubility in water
no
what is covalent bonding solubility in water
no
what is metallic bonding solubility in water
no
what is the relative mass of a proton
1
what is the relative mass of a neutron
1
what is the relative charge of proton
+1
what is the relative charge of a neutron
0
what is the relative mass of a electron
2,000
what is the relative charge of a electron
-1
how to separate a insoluble solid and a liquid
filtration
how to separate a souble solid and a liquid (when liquid not required)
evaportation
how to separate a soluble solid and a liquid(when liquid is required)
simple distillation
how to separate immisicble liquids
seperating funnel
how to seperare misicble lquids(with diffrent boiling points)
fractal distillation
how to separate miscible liquids (on the basis of solubility)
paper cromatogrphy
what is the relation in oxygen particles between sulfate and sulfite
sulfate will always have one more oxygen particle then sulfite (sulfate usually is 3 oxygen sulfide is usually 2 oxygen)
what will the suffix be on the ion if it is monotomic
-ide
what 2 metals do brass contain
zinc and copper
why are alloies stronger than pure metals
the different sizes of atoms in the metals mean that the atoms are no longer aligned in rows and will no longer slide over one another
what does electrolysis mean/do
splits up ionic molecules with electricty
what is the negative pole called in an electrolysis experiment
cathode
what is the postive pole called in an electrolysis experiment
anode
what happens to the metals in electrolysis reactions
They gain electrons and form a solid layer on the bottom of the solution
what happens to the non-metals in electrolysis reactions
they lose electrons and become gasses and bubble
