2 PLUNKETT REVISION 26/04/2022

Revision on the following topics​

​Topics:

• ​Carbon cycle

• Water cycle

• The periodic table

• Origins of the universe

• The atom​

• ​​Evaporation

  • when water molecules are heated , ​and change from liquid to gas molecules.

• Condensati​on

  • Where water molecules change from gas to liquid

• Perspiration

  • When clouds become to heavy, they release the stored water

• Transpiration​

  • When trees/plants release water into the atmosphere​

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​The Water Cycle

• ​Photosynthesis - plants take in carbon dioxide from the atmosphere and produce oxygen and glucose

• The plants are consumed by animals (this is called consumption)

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• If the plant dies, it releases its nutrients into the soil (this is called decomposition)​

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​Stages of the carbon cycle

​The Carbon Cycle

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• Combustion - when fossil fuels (formed by dead plants) is burned to produce energy

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• Respiration - when animals take in oxygen and glucose, and produce carbon dioxide and water vapor

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Stages of the carbon cycle

The Carbon Cycle (continued)​

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​We will also revise elements, compounds and molecules.

​​The atom

​What is a group? What is a period?

​​Periodic Table

​An atom is the smallest building block of all matter.

​A molecule is two or more atoms joined together chemically

Molecule​

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​A compound is two or more different atoms joined together chemically

​​Compound

• ​Always the smaller number

• Tells us the number of protons (which is equal to the number of electrons) ​

The Atomic Number

• Always the larger number

• Tells us the number of protons and neutrons​

​​The Mass Number

• ​The columns on the periodic table are arranged into groups.

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• The Rows on the periodic table are called periods.

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​The Arrangement of the Periodic Table

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​The solar system consists of:

• 8 planets

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• 1 Star (our sun)

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• Space Dust (which forms stars over millions of years)​

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​The Solar System

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• Jupiter is the largest planet

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• It has 79 moons!​

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​Some text here about the topic of discussion.

​Largest Planet

The smallest planet, Mercury, is also the closest to the sun.

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​Some text here about the topic of discussion.

​The Smallest Planet​

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