GCSE Chemistry Revision "Metals and Alloys" скачать в хорошем качестве

GCSE Chemistry Revision "Metals and Alloys"

For thousands of questions and detailed answers, check out our GCSE workbooks https://www.amazon.co.uk/Dr-Shaun-Don... Great deals on workbooks for schools https://www.freesciencelessons.co.uk/... In this video, we look at the properties of metals and of alloys. First we explore the structure of metals, looking at metallic bonding and the sea of delocalised electrons. We use this to explain why pure metals can be bent and shaped, why metals can conduct electricity and heat and why metals have high melting and boiling points. We then look at the structure of alloys and use this to explain why alloys are harder than pure metals. This video is based on the AQA spec. This video may be appropriate for iGCSE / O Level Chemistry. Please consult your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks. Image credits: Gold ingot (By Swiss Banker [Public domain], via Wikimedia Commons) Bronze guitar string (By Badagnani (Own work) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC BY 3.0 (http://creativecommons.org/licenses/b...)], via Wikimedia Commons)