Annie Termaat and Christopher Talbot Solutions for Chapter: How Do We Map Matters?, Exercise 17: SOME SUMMATIVE PROBLEMS TO TRY
Annie Termaat Chemistry Solutions for Exercise - Annie Termaat and Christopher Talbot Solutions for Chapter: How Do We Map Matters?, Exercise 17: SOME SUMMATIVE PROBLEMS TO TRY
Attempt the free practice questions on Chapter 3: How Do We Map Matters?, Exercise 17: SOME SUMMATIVE PROBLEMS TO TRY with hints and solutions to strengthen your understanding. MYP By Concept 4&5 Chemistry solutions are prepared by Experienced Embibe Experts.
Questions from Annie Termaat and Christopher Talbot Solutions for Chapter: How Do We Map Matters?, Exercise 17: SOME SUMMATIVE PROBLEMS TO TRY with Hints & Solutions
The table provides information on different ratios (as percentage by mass) of copper-tin alloys used as bronzes.
| Percentage copper | Percentage tin | Properties |
| Too brittle to be useful for large weight bearing objects | ||
| Maximum strength | ||
| Too malleable to be useful for large weight bearing objects |
All over the world, most Bronze Age culture used mixtures of about percent copper and percent tin, the remainder made up of impurities including lead and antimony.
Describe how alloys can have different physical properties from each of the metals they are made of.
The table provides information on different ratios (as percentage by mass) of copper-tin alloys used as bronzes.
| Percentage copper | Percentage tin | Properties |
| Too brittle to be useful for large weight bearing objects | ||
| Maximum strength | ||
| Too malleable to be useful for large weight bearing objects |
Suggest how the presence of small amounts of impurities changed the pattern of the properties shown in the above table.
Explain how delocalized electrons in the metals contribute to the following physical property.
Lustre
Explain how delocalized electrons in the metals contribute to the following physical property.
Conductivity of heat
Explain how delocalized electrons in the metals contribute to the following physical property.
Conductivity of electricity
Explain how delocalized electrons in the metals contribute to the following physical property.
Malleability and Ductility
The image in the figure represents flame emission spectra of purified salts of (a) potassium and (b) an element discovered in . Analyse the image. Suggest why Bunsen and Kirchoff knew the second sample did not contain potassium.
(a)
(b)
The image in the figure represents flame emission spectra of purified salts of (a) potassium and (b) an element discovered in . Analyse the image. Suggest the reason the new element was called 'rubidium'.
(a)
(b)
