False Statement is correct but it is not the law see page 222
True for complete combustion
False water & a salt
Not required here; see text book for answers
Questions 4 to 11
4 --- d 5 --- a actually there is no correct answer, it should be phosphorus trichloride
6 --- c 7 --- a 8 --- b 9 --- c 10 --- b 11 --- c or metallic oxide
iron (III) chloride
1, 2, 2, 1
4, 1, 2
4, 1, 2
3, 1, 1
1, 2, 1, 1
3Zn + 2Fe(NO3)3 ------> 2Fe + 3Zn(NO3)2
MgCO3 ----> MgO + CO2
2AgNO3 + CaI2 ------->2 AgI + Ca(NO3)2
CH4 + 2O2 -----> CO2 + 2H2O
4K + O2 ----> 2K2O
not enought time allowed for the reaction to occur and/or temperature is not sufficiently hot enough to overcaome the energy
Not done here; it is a look in the text book for answer question.
Make sure you can handle this question.
pH is a measure of the hydrogen ion concentration in a solution. Precisely, pH is the negative logarith of the hydrogen ion
concentration measured in moles per litre.
pH of 3 is more acid by a factor of 100
bubbling or bubbles forming on the surface of the zinc
the coefficients are 1, 2, 1, 1
increase the temperature, increase the concentration of the hydrochloric acid, crush up or make into a powder the zinc, fourth one ??? I don't know.
bubbles will stop being formed and/or the zinc will have dissappeared
add another piece of zinc and look for a reaction or us an indicator
X is a metal
Y is a metallic oxide
Z would be a basic solution
litmus paper will turn blue and phenolphthalein will turn red
Experiment A 200s, Experiment B 100 s
Experiment C 40 s, Experiment D 20 s
Yes, A must be the starting point, lowest temperature and weakest soltion concentrations
A to B has a doubling of concentration
A to C has an increase of temperature; this is a non linear effect
A to D has an increase in concentration and a doubling in concentration
If you did all these questions, then checked you answers and did any follow-up to ensure that you understand the answer, you
shoulddo well on the Unit Test.