Navigating the periodic table PDF

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Darren Simon is the professor in charge....

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Week 1 Workshop 1: Getting started 2020

Getting Setup FLUX Polls • Please register for FLUX Polling • Go to flux.qa

• Put in the feed code for your allocated workshop stream:

Pre-workshop recap: Week 0 Review of key concepts • Mole • Molar mass • Concentration • Empirical formula • Percentage yield • Limiting reagents

Activity: Context based learning Current Global Crisis • What are some of the most pressing global environmental concerns? • Climate change • Rising sea levels • http://coastalrisk.com.au/

• This story will continue throughout the semester with questions relating to issues of climate change and relating to the chemistry that we are learning about

Activity Rising sea levels

• Sea levels are continuing to rise owing to the rapid melting of ice sheets in places such as Antarctica and Greenland • In 2013 the Inter-governmental Panel on Climate Change report suggested there would be an sea levels would increase of 0.74 m by 2100 • New data from the National Oceanic and Atmospheric Administration predicts global sea levels could rise by 2.0 m by 2100 if emissions remain at their current levels

Activity Rising sea levels • How will rising sea levels impact Melbourne? • Explore this through the web site (http://coastalrisk.com.au/ )

• 0.74 m sea level rise (predicted in 2013) • Loss of mainly coastal suburbs of Melbourne

• 2.0 m sea-level rise (predicted in 2019) • Drastic increase will see the submersion of many low-lying suburbs of Melbourne

• Professor John Church from the Climate Change Research at the University NSW said while rising sea levels cannot be stopped, they could be slowed

Week 1 Workshop 1: Navigating the periodic table 2020

Weekly objectives 1. Understand how the periodic table was designed and developed 2. Recognise the fundamental characteristics of the periodic table 3. Classify the elements based on groupings in the periodic table 4. Identify the types of bonds formed by elements in molecules based on their position in the periodic table

Pre-workshop recap: Week 1 Definitions • Discrete chemical species - comprised of one or more subatomic particles: • Neutron: neutral; no electrical charge • Electron: negatively charged • Proton: positively charged

• Element - matter containing atoms all with the same number of protons. • Molecule - matter containing atoms bonded together in a definite structure. • Molecular formula - a formula that shows the number of each type of atom in a molecule. • Compound - matter containing two or more elements in definite proportions. • Mixture - matter containing more than two compounds and/or elements.

Chemical matter

Elements of a smartphone

Atomic Symbols • Element symbol – atomic symbol for an element • Atomic number (Z) – number of protons in the nucleus; defines the element • Atomic mass (amu) – averages of mass number from natural isotopic abundances

Typical atomic symbol Isotopic abundance Isotopes Other atomic symbols

Periodic Table of the Elements

Activity Interactive resource • Bonding simulation: https://teachchemistry.org/classroom-resources/ionic-covalent-bondingsimulation

Activity What is a chemical?

Activity What is a chemical?

Activity What is a chemical?

Activity

Consider the examples given in the previous slides, and campaigns about “chemical-free” and/or “hazard-free” products. As scientists, you have a role to play in educating the general public. 1. What is chemical-free? 2. How would you approach a conversation with an individual who believes things can be chemical-free?

Activity: feedback and discussion

Consider the examples given in the previous slides, and campaigns about “chemical-free” and/or “hazard-free” products. As scientists, you have a role to play in educating the general public. 1. What is chemical-free? See: http://blogs.nature.com/thescepticalchymist/files/2014/06/nchem_-Chemical-Free.pdf 2. How would you approach a conversation with an individual who believes things can be chemical-free? People often misunderstand what the term chemical means. People may think that all chemicals are dangerous and potentially harmful. There is an underlying misconception that if you cannot pronounce the ingredient on the packaging, it’s a chemical that will harm you.

Harmful foods?

Summary Today we have • As appropriate to close workshop

Resources to explore • https://www.youtube.com/watch?v=bkhhCi7nMFI • http://blogs.nature.com/thescepticalchymist/files/2014/06/nchem_-Chemical-Free.pdf • https://blogs.sciencemag.org/pipeline/archives/2014/07/01/chemicalfree_products_the_complet e_list • https://www.compoundchem.com/2014/05/19/natural-vs-man-made-chemicals-dispellingmisconceptions/ •

Week 1 Workshop 2: Navigating the periodic table 2020

Chemical bonding Ionic bond • Electrostatic attraction between a cation and an anion Covalent bond • Occurs when atoms share their electrons to fill their outer shell • Two nuclei share electrons through overlap of atomic orbitals • Some atoms prefer to be cations, others anions • Some atoms prefer to share electrons rather than be a cation or anion

Which elements are more likely to participate in: Ionic bonding • Metals and non-metals

Covalent bonding • Non-metals

Groups

Activity Common chemicals Consider the following chemicals found in every day life: a) Fuel gas b) Carbon dioxide c) Dihydrogen oxide d) Table salt 1. What is the chemical formula of molecules b) – d)? 2. What type of bonding takes place in these molecules?

5 mins

Groups

Activity: Feedback and discussion Common chemicals Consider the following chemicals found in every day life: a) Fuel gas C4H10, covalent bonding b) Carbon dioxide CO2, covalent bonding c) Dihydrogen monoxide H2O (water!) covalent bonding d) Table salt NaCl, ionic bonding

5 mins

Groups

Activity Periodic Table Trivia 1. What is the most abundant element in the universe? 2. Where would element 120 sit in the periodic table, once it has been created? 3. What was the first man-made element? 4. Most abundant element, by mass, in the human body? 5. Which letter is not in the periodic table? 6. Group 17 elements are called halogens. What is the name of Group 16?

7. Create the longest word you can using only symbols in the periodic table. • Eg. TiNa, CaGe

5 mins

Activity: Feedback and discussion Periodic Table Trivia 1. What is the most abundant element in the universe? Hydrogen 2. Where would element 120 sit in the periodic table, once it has been created? Group 2 under radium 3. What was the first man-made element? Technetium 4. Most abundant element, by mass, in the human body? Oxygen 5. Which letter is not in the periodic table? J 6. Group 17 elements are called halogens. What is the name of Group 16? Chalcogens

Activity Ionic or covalent bond 1. Which of the following are covalent compounds, and which are ionic? a) AlCl3 b) NH3 c) NH4NO3 d) FeS e) HCl f)

H2O

Activity: Feedback and discussion Ionic or covalent bond 1. Which of the following are covalent compounds, and which are ionic? a) AlCl3: Ionic b) NH3: Covalent c) NH4NO3: Covalent d) FeS: Ionic e) HCl: Covalent f)

H2O: Covalent

Activity Naming covalent compounds 1. Write the chemical symbol/formula for the following compounds: a) Dihydrogen monoxide b) Carbon disulfide c) Dichlorine heptoxide d) Iodine monobromide 2. Name the following compounds: a) N2S4 b) H2S c) Br2I4

Activity: Feedback and discussion Naming covalent compounds 1. Write the chemical symbol/formula for the following compounds: a) Dihydrogen monoxide: H2O b) Carbon disulfide: CS2 c) Dichlorine heptoxide: Cl2O7 d) Iodine monobromide: IBr 2. Name the following compounds: a) N2S4: Dinitrogen tetrasulfide b) H2S: Dihydrogen sulfide c) Br2I4: Dibromine tetraiodide

Summary Today we have • As appropriate to close workshop

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