Introduction
Elements!
Remember:
- An element consists of only one type of atom
- An element cannot be broken down into a simpler type of matter.
How many elements are there?
Presently there are about 118 known elements but only 91 of these occurr naturally- the rest are synthethic and must be made in a laboratory.
Scientists display all known elements in a chart, which is organised according to their size and properties.
This is called the PERIODIC TABLE!
Organisation of elements
Elements can be classified into 3 groups:
- Metals
- Non-metals
- Mettaloids
80% of elements are metals
Task
Your tasks for this lesson:
- Identify metals and non-metals on your periodic table
- Summarise the properties of metals and non-metals
- Draw separate concept maps for two metals and two non-metals
- Class debate: are metals better than non-metals?
Process
1. Identifying metals and non-metals on the periodic table
Using the interactive periodic table http://www.rsc.org/periodic-table/ to help you, classify the elements in your periodic table as metals or non-metals. Be sure to use different colours to distinguish the two and provide a key at the bottom of the table.
Answer the following questions on your worksheet:
1. Is Hydrogen a metal or non-metal?
2. Is Calcium a metal or non-metal?
3. Is Sulfur a metal or non-metal?
4. Name a mettaloid
2. The properties of metal and non-metals
Complete the interactive activity 'Atoms and Elements' to investigate the properties of metals and non-metal elements.
http://www.bbc.co.uk/bitesize/ks3/science/chemical_material_behaviour/atoms_elements/activity/
Your task:
Once you have completed the interactive activity and quiz, costruct a table in the space below to summarise the properties of metals and non-metals.
3. Take a virtual tour of a house in order to identify metals contained in everyday items.
http://www.scootle.edu.au/ec/viewing/L927/index.html
Your task:
Create separate concept maps for 2 metals and 2 non-metals that are common in our daily lives. The concept map should include properties of the element as well as how it is found in its natural state and in your daily life.
Use the interactice periodic table to help you find out more about your chosen elements:http://www.rsc.org/periodic-table/
Evaluation
Well done you have completed the "Properties of Elements: metals vs. non-metals" webquest!!!!
It is now time to reflect on your learning!
Please complete the self evaluation worksheet- "How did I go?" in your workbook!
Conclusion
I hope you enjoyed your interactive science lesson!
Learning checklist!
You should now be able to:
- Locate metal elements and non-metal elements on the periodic table
- Summarise the properties of metals and non-metals
- Identify examples of metal elements and non-metal elements in your daily environment
