English National Curriculum - Science Science

3. Explore cracking

Mission Objectives

Describe what's meant by cracking and then state the conditions for cracking

Describe what's meant by an alkene and describe the test for alkenes

Balance chemical equations to show cracking

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Keywords

Words and meanings to learn

alkanes

Saturated hydrocarbons such as propane, ethane and methane.

cracking

Process used in thermal and catalytic cracking to break big hydrocarbon molecules into small molecules using pressure and heat.

manufacture

Production of something on a great scale.

unsaturated

Molecules which have carbon double or triple bonds so do not carry the largest number of hydrogen atoms.

polymers

Substances which are either synthetic or natural that contain huge molecules.

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