Tag Archives: catalysts

C7 Chemical Reactions (Combined Science)

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Here are some key terms for this topic: Key Terms C7

GCSE Bitesize has revision pages (that take you through the topic), a test and an activity – click on Rates of Reaction.  GCSE s-cool – Rates of Reaction – revision notes & animations, practise exam questions and a revision summary. Skoool Chemistry – click on ‘6. Rates of Reaction’ for excellent lessons that take you through the topic; also a glossary of key terms.

Chemactive worksheets and answers just click on ‘Rates questions’.

For Doc Brown’s Chemistry quizzes, word-fills, crosswords and study notes go here and just scroll down.

This is a great power-point that also revises C6 Energy changes in chemical reactions:

Chemical reactions from Carole Paquette

C71.1 RATE OF REACTION

Rate of reaction chemical kinetics (condensed) from jslayer

Science Bank (Reactions & Energy Changes): part 2 Reaction Rates (from 4m 40s) & part 3 Catalysts (from 9m 20s):

Five minutes on how to speed up chemical reactions (and get a date) from TED-Ed.

GCSE Bitesize – two videos – Rates of Reaction (3m 18s) or Rates of Reactions (4m 40s) & Bitesize Top 20 Science Demos – Rates of Reaction (5m 51s).

C7.2 REDOX

IGCSE Chemistry, a 25m lesson from ChemistryKlipz covers redox rcts (to 6m 20s):

BBC Short Circuit Redox Changes – a 19m video.

2.5 Enzymes

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IB 2.5 – Enzymes in 10m from Dan Rott:


Many assessment statements are also covered by Stephanie Castle (with more being added all the time).

An animated, narrated tutorial on protein denaturation (frying an egg) – from Sinauer Associates. And Mr W. sings ‘Enzymes!’:

Mr Bozeman describes Enzymes:

Here are some fantastic animated tutorials from McGraw Hill Education – how enzymes work,  a biochemical pathway &  feedback inhibition of biochemical pathways.

LACTOSE-FREE MILK

An excellent video from HHMI BioInteractive: the evolution of lactose tolerance. Two other videos: What is lactose intolerance? in 2m 35s and lactose intolerance in 3m 30s.

Key terms as flashcards from Quizlet (you also can test yourself in a number of ways):

PRESCRIBED PRACTICAL 3 – Enzyme activity

Experimental investigation of a factor affecting enzyme activity

Enzyme experiments – notes from BioNinja

IGCSE Bio Topic 5 – Enzymes

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Topic 5 revision notes in downloadable word format.

For self-assessment questions, with exercises and discussions, just click on ‘The chemicals of living cells’ (qu.13 onwards) at Biology GCSE & IGCSE Question Bank. A powerpoint (the chemicals of living cells) can be downloaded from the same site here. The s-cool revision site lets you revise the topic, summarizes the topic and tests you on it. GCSE Bitesize has revision pages (that take you through the topic), a test and an activity.

Effect of Temperature and pH on enzyme activity from clairebloom

A lesson on Enzymes from Mr Dare:

Science Bank 8: you just need Part 3 (from 9m 55s) – Enzymes – biological catalysts & factors affecting their rate:

Two videos on Enzymes – 4m 19s vid from GCSE Bitesize and 2m 48s from Clipbank video resources.

A simple animated tutorial from McGraw Hill Education on how enzymes work.

Mr W sings ‘Enzymes!’:

IGCSE Chem Topic 7 – Chemical Reactions

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Here are some key terms for this topic: Key Terms C7

GCSE Bitesize has revision pages (that take you through the topic), a test and an activity – click on Rates of Reaction.  GCSE s-cool – Rates of Reaction – revision notes & animations, practise exam questions and a revision summary. Skoool Chemistry – click on ‘6. Rates of Reaction’ for excellent lessons that take you through the topic; also a glossary of key terms.

Chemactive worksheets and answers just click on ‘Rates questions’.

For Doc Brown’s Chemistry quizzes, word-fills, crosswords and study notes go here and just scroll down.

This is a great power-point that also revises C6 Energy changes in chemical reactions:

Chemical reactions from Carole Paquette

7.1 PHYSICAL & CHEMICAL CHANGES

7.2 RATE (SPEED) OF REACTION

Rate of reaction chemical kinetics (condensed) from jslayer

Science Bank (Reactions & Energy Changes): part 2 Reaction Rates (from 4m 40s) & part 3 Catalysts (from 9m 20s):

Five minutes on how to speed up chemical reactions (and get a date) from TED-Ed.

GCSE Bitesize – two videos – Rates of Reaction (3m 18s) or Rates of Reactions (4m 40s) & Bitesize Top 20 Science Demos – Rates of Reaction (5m 51s).

Factors-Affecting-Rate-of-Reaction

Infographic courtesy of the fabulous Compound Interest blog – just click on it to enlarge.

7.3 REVERSIBLE REACTIONS

GCSE Bitesize covers Reversible Reactions in a 4m 48s video.

7.4 REDOX

IGCSE Chemistry, a 25m lesson from ChemistryKlipz covers redox rcts (to 6m 20s):

BBC Short Circuit Redox Changes – a 19m video.