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Flash Animations for MATTER, Change of State (phase) and Measuring learning

 

 

 

Change of state

 

01. States of water   

 

02. States of water | molecules in every state   

 

03. Water cycle   

 

04. Freezing of a pure substance | water   

 

05. Freezing of a pure substance | cyclohexane   

 

06. Freezing of a mixture | water + salt   

 

07. Boiling of a pure substance | water   

 

08. Boiling of a mixture | water + salt   

 

09. Fusion of a pure substance | Melting point of ice   

 

10. Fusion of a mixture | Crushed ice of salt water   

 

 

 

Measurement

 

11. Mass measurement | Double pan & electronic balance   

 

12. Volume measure, cylinder, pipette, liquid, solid   

 

13. Volumetric Mass Density   NEW

 

 

P, V, T

 

14. P & V | Boyle's law   

 

15. P & T | Charles's law | Kelvin scale | absolute zero   

 

 

 

 

 

 

 

 

 

 

 

 

 

Mixtures

 

16. Chromatography | simple version   

 

17. Chromatography | high school   

 

18. Miscibility of liquids   

 

19. Expansibility of gases   

 

20. Dissolving and mass | solution, solvent and solute   

 

21. Dissolution | Dilution | Fusion (melting)   

 

22. Water treatment process | for drinking water   

 

Practice Questions

 

23. Dissolution   

 

24. Pure water    

 

25. Water states | Volume measurement    

 

26. Water in drinks   

 

27. Vaporization   

 

28. Solidification (freezing) and fusion (melting)   

 

 

 

 

 

 

 

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MIXTURES AND PURE BODY

 

The water in our environment

 

Omnipresence of water
in our environment.

Water, drinks and a constituent of living organisms.

Recognition test of the water.

 

 

 

Aqueous mixtures

 

Homogeneous and heterogeneous mixtures.

Separation of some components of aqueous mixtures.

Examples of heterogeneous constituents of beverages.

Existence of the gas dissolved in water.

The recognition test of carbon dioxide in lime water

 

 

 

Homogeneous mixtures and pure body.

 

Water, homogeneous mixtures.

Presence in a mineral substances other than water.

Obtaining water (almost) pure by distillation.

 

 

 

 

State changes of water, phenomenological approach

 

First approach to the states of matter.


Specific properties of each physical state.


State changes are invertible.
Water cycle.


Mass measurements, unit, the kilogram (kg).


Volume measurement, unit, per cubic meter (m3).


Distinction between mass and volume.


Conservation of mass during state changes and not the volume conservation.


Locating a temperature, unit: degree Celsius (° C).


Existence of a temperature plateau during a change of state for a pure substance.

 

 

Water : solvent

 

Water is a solvent of some solids and some gas, it is miscible with some liquid.

Conservation of total mass during a dissolution.

Vocabulary of dissolution: the notion of saturated solution is limited to a qualitative approach.

 

Air composition

 

Dioxygen, forming air with nitrous.

 

The oxygen necessary for life.

 

 

Volume and mass of air.

 

Character of a compressible gas.

Mass of a given volume of gas.

 

 

A molecular description to understand

 

A first particle model to interpret the compressibility of a gas.

Distinction between mixed and pure body for air and water vapor.

The existence of the molecule.

The three states of water through the molecular description:
- A gas is dispersed and disorganized;
- The liquid state is compact and disordered;
- Solid state is compact, crystalline solids are ordered.

Interpretation of mass conservation during state changes and in mixtures.