| Date | May 2019 | Marks available | 1 | Reference code | 19M.1.hl.TZ1.11 |
| Level | HL | Paper | 1 | Time zone | TZ1 |
| Command term | Question number | 11 | Adapted from | N/A |
Question
Which combination corresponds to a strong metallic bond?
Markscheme
B
Examiners report
The concept of charge and ionic radii size on the strength of the bond was answered well but had one of the lowest discriminatory indices on the paper.
Syllabus sections
-
18M.2.sl.TZ1.2d.ii:
Outline why solid calcium is a good conductor of electricity.
- 17M.1.sl.TZ1.9: A substance has the following properties: What is the most probable structure of this...
- 17M.1.sl.TZ2.12: Which metal has the strongest metallic bond? A. Li B. Na C. K D. Rb
- 18M.1.hl.TZ1.11: Which metal has the strongest metallic bonding? A. Na B. Mg C. Al D. Ca
-
18M.2.hl.TZ1.2d.ii:
Outline why solid calcium is a good conductor of electricity.
-
22M.2.hl.TZ2.5c:
Describe the bonding in iron, Fe (s).
- 19M.1.hl.TZ2.10: Which combination causes the strength of metallic bonding to increase?
- 19M.1.sl.TZ1.12: Which combination corresponds to a strong metallic bond?
- 19M.1.sl.TZ2.10: Which combination causes the strength of metallic bonding to increase?
-
17M.2.sl.TZ1.2d.ii:
Explain why an aluminium-titanium alloy is harder than pure aluminium.
-
17M.2.hl.TZ1.2d.ii:
Suggest why the melting point of vanadium is higher than that of titanium.
-
17N.2.sl.TZ0.2b:
Explain why the melting points of the group 1 metals (Li → Cs) decrease down the group.
-
17M.2.sl.TZ1.2a:
Describe the bonding in metals.
-
17N.2.hl.TZ0.3b:
Explain why the melting points of the group 1 metals (Li → Cs) decrease down the group whereas the melting points of the group 17 elements (F → I) increase down the group.
- 21M.2.hl.TZ2.2b(ii): Describe metallic bonding and how it contributes to electrical conductivity.
- 21M.2.hl.TZ1.1a: Outline why metals, like iron, can conduct electricity.
- 21M.2.hl.TZ1.1d(v): Suggest why chemists find it convenient to classify bonding into ionic, covalent and metallic.
- 21M.2.hl.TZ1.1f: Explain why the addition of small amounts of carbon to iron makes the metal harder.
- 21M.2.sl.TZ1.1a: Outline why metals, like iron, can conduct electricity.
- 21M.2.sl.TZ1.1e: Explain why the addition of small amounts of carbon to iron makes the metal harder.
- 20N.2.sl.TZ0.4d(iii): Describe the bonding in metals.
- 20N.3.sl.TZ0.4b(i): Alloying metals changes their properties. Suggest one property of magnesium that could be...
- 20N.2.sl.TZ0.4d(iv): Nickel alloys are used in aircraft gas turbines. Suggest a physical property altered by the...
- 20N.2.hl.TZ0.4d(vi): Nickel alloys are used in aircraft gas turbines. Suggest a physical property altered by the...
- 20N.2.hl.TZ0.4d(v): Describe the bonding in metals.
-
20N.3.hl.TZ0.4c(i):
Alloying metals changes their properties. Suggest one property of magnesium that could be improved by making a magnesium–CNT alloy.
- 21M.2.sl.TZ2.2b(ii): Describe metallic bonding and how it contributes to electrical conductivity.
-
20N.1.sl.TZ0.12:
Which series shows the correct order of metallic bond strength from strongest to weakest?
A.
B.
C.
D.
- 21M.2.sl.TZ1.1c(iv): Suggest why chemists find it convenient to classify bonding into ionic, covalent and metallic.
