{"id":1036,"date":"2013-02-06T08:05:53","date_gmt":"2013-02-06T05:05:53","guid":{"rendered":"http:\/\/dorjegurung.com\/sciblog\/?p=1036"},"modified":"2026-03-12T18:23:28","modified_gmt":"2026-03-12T18:23:28","slug":"contents-igcse-chemistry","status":"publish","type":"post","link":"https:\/\/www.dorjegurung.com\/sciblog\/contents-igcse-chemistry\/","title":{"rendered":"Intro & Contents: IGCSE Chemistry Discrepant Events"},"content":{"rendered":"\n

Often at the beginning of a topic, students either observe a demonstration or watch a video or are given a description of a discrepant event.  After sufficient materials have been covered, they are challenged to explain it.<\/p>\n\n\n\n

However, unlike in MYP science, their write-ups aren’t graded according to any specific criteria. Some times the discrepant event write-up may be graded and contribute towards their final grade just as a quiz would. Some times, it may lead to a design investigation. What a given Discrepant Event requires is made clear at the time it is demonstrated.<\/p>\n\n\n\n

Regardless, Discrepant Events on this blog contain questions to guide the students arrive at a solution.<\/p>\n\n\n\n

IGCSE year 1 (Form 4) Discrepant Events are labeled F4 and year 2 (Form 5) F5.<\/p>\n\n\n\n

Expectations for discrepant events that are common to both forms are different, as will be evident from the accompanying questions.<\/p>\n\n\n\n

Form 4 Discrepant Events<\/strong><\/p>\n\n\n\n

    \n
  1. Magical Candle<\/a>: About gaseous behavior.<\/span><\/li>\n\n\n\n
  2. Plastic Bottle Canons<\/a>: An observation and deduction exercise about elements in the periodic table.<\/li>\n\n\n\n
  3. Water Bottle Explosion<\/a>: About state of matter, energy and pressure.<\/li>\n\n\n\n
  4. Uncanny Can<\/a>: About state of matter.<\/li>\n\n\n\n
  5. Dancing Coin<\/a>: About state of matter.<\/li>\n\n\n\n
  6. Rubbery Egg<\/a>: About state of matter.<\/li>\n\n\n\n
  7. Hair Brain Chemistry<\/a>: An observation and deduction exercise on the patterns of reactivity.<\/li>\n\n\n\n
  8. Fun with Liquid Nitrogen<\/a>: About energy and state of matter.<\/li>\n<\/ol>\n\n\n\n

    Form 5 Discrepant Events<\/strong><\/p>\n\n\n\n

      \n
    1. Plastic bottle Canons<\/a>:\u00a0An observation and deduction exercise about elements in the periodic table and Stoichiometry (Quantitative Chemistry).<\/span><\/li>\n\n\n\n
    2. Magical Beakers<\/a>: About acid-base chemistry.<\/li>\n\n\n\n
    3. Magical Crystals<\/a>: About ion-exchange\/precipitation\/double displacement reaction.<\/li>\n\n\n\n
    4. Gunpowder: Ideal Mixture<\/a>: About Stoichiometry (Quantitative Chemistry)<\/li>\n\n\n\n
    5. Sugar Daddy…with Flare<\/a>: About Redox Reactions and Stoichiometry (Quantitative Chemistry)<\/li>\n\n\n\n
    6. Cracking Crackers<\/a>: About redox reactions.<\/li>\n<\/ol>\n\n\n\n

      Enjoy!<\/p>\n","protected":false},"excerpt":{"rendered":"

      How and why I used discrepant events in IGCSE chemistry and links to some I have used in the past.<\/p>\n","protected":false},"author":6,"featured_media":2507,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[9],"tags":[15,19,4],"class_list":["post-1036","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-igcse","tag-discrepant-event","tag-igcse-chemistry","tag-myp-science"],"blocksy_meta":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/www.dorjegurung.com\/sciblog\/wp-content\/uploads\/2021\/03\/IGCSE-chemistry-featimage.jpg","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2Y7Kk-gI","_links":{"self":[{"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/posts\/1036","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/comments?post=1036"}],"version-history":[{"count":1,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/posts\/1036\/revisions"}],"predecessor-version":[{"id":4094,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/posts\/1036\/revisions\/4094"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/media\/2507"}],"wp:attachment":[{"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/media?parent=1036"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/categories?post=1036"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dorjegurung.com\/sciblog\/wp-json\/wp\/v2\/tags?post=1036"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}