1. X, Y and Z are elements in the same period of the Periodic Table.
X forms an acidic oxide, Y
forms a basic oxide, and Z forms an amphoteric oxide. If X, Y and Z are placed in order of
increasing atomic number (lowest atomic number first), which order is correct?
A. X, Y, Z
B. X, Z, Y
C. Y, X, Z
D. Y, Z, X
7. Many properties of an element and its compounds can be predicted from the position of the
element in the Periodic Table. What property could not be predicted in this way?
A. the acidic or basic nature of its oxide
B. the formula of its oxide
C. the number of isotopes it has
D. its metallic or non-metallic properties
8. Elements X and Y are in Group VII of the Periodic Table. X is a liquid at room temperature. Y is
a solid at room temperature. Which statements are correct?
1. Atoms of Y have more protons than atoms of X.
2. Molecules of Y have more atoms than molecules of X.
3. Y displaces X from aqueous solutions of X-ions.
A. 1 only
B. 2 only
C. 3 only
D. 1, 2 and 3
9. Which statement about groups in the Periodic Table is correct?
A. All groups contain both metals and non-metals.
B. Atoms of elements in the same group have the same total number of electrons.
C. In Group I, reactivity decreases with increasing proton (atomic) number.
D. In Group VII, the melting point of the elements increases with proton (atomic) number.
10. Element X is a solid at room temperature. It needs to lose one electron per atom to gain the
electronic structure of a noble gas. It has the least reactivity with water in its group. What is the
element X?
A. At
B. Cs
C. F
D. Li
11. Each of the halogens X2, Y2 and Z2 was added to samples of aqueous solutions containing
the ions of the other two halogens. The table shows the results. What is the order of reactivity
of the halogens?
Table of Halogen Reaction Results
| halogen | X2 | Y2 | Z2 |
|:---:|:---:|:---:|:---:|
| X2 | | Y2 displaced | Z2 displaced |
| Y2 | no reaction | | no reaction |
| Z2 | no reaction | Y2 displaced | |
most reactive ►least reactive
A. X2, Y2, Z2
B. X2, Z2, Y2
C. Y2, X2, Z2
D. Z2, Y2, X2
12. Which substance reacts with water to form a soluble compound and an insoluble gas?
A. ammonium sulfate
B. caesium
C. calcium carbonate
D. copper
13. X, Y and Z are in the same period of the Periodic Table. X is a non-metal, Y is a metal and Z
shows the properties of both metals and non-metals. What is the order of these three elements
across the Periodic Table?
A. XZY
B. YXZ
C. YZX
D. ZXY
14. Which element has the greatest number of electrons in the outermost shell (energy level) of
its atoms?
A. fluorine
B. helium
C. lithium
D. potassium
15. Which statement about the alkali metals is correct?
A. Their melting points decrease on descending the group.
B. Their reactivities decrease on descending the group.
C. They form covalent bonds with the halogens.
D. They form oxides on reacting with water.
17. Sodium is a metal. Using only this information, what can be deduced about sodium?
A. It has a low melting point.
B. It is a conductor of electricity.
C. It is less dense than water.
D. It is very reactive.
16.
