q1 - Paper 1 SPECIMEN (SET 1) Q2
2) Ionic compounds contain ions.
(a) The numbers of electrons, neutrons and protons in four particles, W, X, Y and Z, are shown in Figure 5.
(a) The numbers of electrons, neutrons and protons in four particles, W, X, Y and Z, are shown in Figure 5.
Explain which particle, W, X, Y and Z, is a negative ion.
(2)
(b) Calcium nitrate contains calcium ions and nitrate ions.
Calculate the relative formula mass of calcium nitrate, Ca(NO3)2 .
(relative atomic masses: Ca = 40, N = 14, O = 16) (2)
(b) Calcium nitrate contains calcium ions and nitrate ions.
Calculate the relative formula mass of calcium nitrate, Ca(NO3)2 .
(relative atomic masses: Ca = 40, N = 14, O = 16) (2)
relative formula mass = .................................................................
(c) Lithium fluoride, LiF, is an ionic compound.
It contains lithium cations and fluoride anions.
The electronic configurations of a lithium atom and of a fluorine atom are shown in Figure 6.
It contains lithium cations and fluoride anions.
The electronic configurations of a lithium atom and of a fluorine atom are shown in Figure 6.
Complete Figure 7 to show the electronic configurations and charges of the ions
in lithium fluoride.
(4)
(Total for Question 2 = 8 marks)