OXIDE
how many oxides are there?
5(Acidic,Basic,Amphoteric,Neutral)
the formula of «Acid»?
H(hydrogen)+Anion(any)=Acid
name at least 4 physical properties about the bases
1)bases conduct electricity
2)bitter taste
3)slippery feeling
4)consist of metals cations and hydroxide anions OH-
why can’t we drink salt water?
Human kidneys can only make urine that is less salty than salt water. Therefore, to get rid of all the excess salt taken in by drinking seawater, you have to urinate more water than you drank. Eventually, you die of dehydration even as you become thirstier
group number of carbon?
14(IV)
the main constituent (formula) of Oxides?
Compound of oxygen+other elements=are oxides
NAME ALL OF THE ACIDs TYPE AND GIVE AT LEAST THO EXAMPLES:
1)Binary acids(HCL,HI,H2S,HF)
2)Oxy acids(H3BO3,H2SO4,HNO3,HNO2,H3PO4,H2SO3)
the form of bases?
OH(hydroxide anions)+Metal(cations)
name at least 4 physical properties about the salts?
1)different colours
2)crystalline solid
3)high melting point and boiling points
4)are soluble in water and their solutions conduct elecricity
atomic number?
electron arrangement ?
valence electrons?
6,2) 4),4 valence
«K2O» what kind of oxide?
basic oxide
is NH3 tripotic ?
no,it’s ammonia base
water soluble bases are called?
alkalis
Neutral salts are compounds from which substances?
strong acid+strong base
graphite’s physical properties?
at least 4
Soft,good conductor,used as lubricant,dark grey,black
what’s the result of:acidic oxide+water
P2O5+3H2O2H3PO4
acid react with ? and produce hydrogen gas
Some metals
in what household things is the bases used?
at least 2 ex
Solid soup,cleaning materials,antacid tablets
diamond s physical properties
at least 4
The hardest substance in the world,no conductor,used as abrasive,transparent
what is the PH of the neutral oxide,acidic oxide and basic oxide?
PH<7(acidic)
PH=7(neutral)
PH>7(basic)
acids whch are used in daily life?
H2SO4-in car batteries
H2SiO3-silicone glue
H3PO4-against plant diseaseswhat kind of rection is going to take:metal oxides and water
Water insoluble bases decompose by heating to give metal oxides and water.
FOR EXAMPLE:
FE(OH)=FEO+H2O
Name the salt that is used in daily life and what is this ?
at least 2 ex
AgNO3-antiseptic
KAI(SO4)2-paper industry(that’s why paper having salty taste
why is graphite not as hard as diamond?
Diamond is hard because the carbon atoms in diamond are bonded in a stronger tetrahedron pattern but graphite is soft and slippery because the carbon atoms in graphite are bonded in layers with only weak vanderwall force holding the layers together.