gen chem 50-100/ 144-186
do you add water to acid or acid to water?
you add acid to water otherwise it will be so exothermic that water will splash at you.
what are the metalloind compounds?
B, Si, GE, AS, SB, Te, Po, At
when do gases have ideal behaviour?
when they are at low pressure and high temperature
what molecular force causes non polar molecules to dissolve in water?
the dipole- induced dipole causes it
where are dried materials store?
can you weigh material when they are hot or you should wait for them to cool down?
they are stored in dessicators
you should wait for them to cool down
what compounds are soluble and which ones are not?
which ones are specifically not?
group 1A metals, as well as NH4 and NO3 are soluble.
AG, HG, Pb as well as BaSO4 and CaCO3 are NOT SLUBLE
at what temperature is the C and F the same ?
at -40C and -40 F
what are allotropes? name two examples?
O3 and O2 ..... graphite and Diamond
is this T/F?
temperature is a measure of average kinetic energy
30 ml of water at 70 degree has a greater average kinetic energy than 50 ml of water at 40 degree?
both are True because temperature is the measure of the kinetic energy.
how many significant figures do these have?
zeros before the first non zero digit in a number are not significant figures. any zeros after the digit will be a significant figure
how does the number of oxygens affect the acidity in oxy acids?
the higher the oxygen numbers the more acidic they will be.
what are boyle's, charle's and Gay lussac's law?
boyles P: incrase V: decrease T=cte
charles T : incrase V: increase P=Cte
Gay T: increase P: increase V=Cte
what does the vapor pressure depend on in a close container?
only depends on temp
what is the density of liquid compared to the solid differ in water compared to the other components? how does this affect the phase diagram
normal molecules: solid density> liquid denisty
in water: solid density<liquid density
in water the solid liquid line is skewed to the left
how many atoms does body centered cubic unit have? what about faced centered?
body centered has 2,face centered has 4
what is the SI unit of pressure?
what is intensive properties? what about extensive?
intensive: doesn't depend on sample amount
extensive: depend on sample amount
what is carbon's standard state?
which oxides are basic and which are acidic
metal oxides are basic, non metal oxides are acidic
what is disproportionation reaction?
a reaction that oxidizes and reduces at the same time.
what are amphoteric substances/
they are those that can donate a proton or can receive one
what are collegiative properties?
properties that depend on number of particles
what is the point of boiling point in terms of equilibrium?
it is at equilibrium
what is a ligand in chemistry?
a lewis based that is in an ion complex
how can you tell that a reaction would occur less likely by looking at the moles of the reaction in reactants?
the more molecules present on the reactant side, the less likely of fruitful reactions to occur.