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- 1. Multiple Choice
Indicate which of these characteristics correspond to evaporation (E) and which correspond to boiling (B): A surface phenomenon
Evaporation
Boiling
- 2. Multiple Choice
Indicate which of these characteristics correspond to evaporation (E) and which correspond to boiling (B):It occurs at a given temperature
Evaporation
Boiling
- 3. Multiple Choice
Acetona´s fusion and boling point are -95°C AND 56°C respectively. Look at the following graph and heating curve and answer: what is the state of this substance at 0°C?
Solid
Liquid
Gas
Plasma.
- 4. Multiple Choice
Indicate if the following statements are true (T) or false (F): Gases have not got a mass and therefore can diffuse.
TRUE
FALSE
- 5. Multiple Choice
Indicate if the following statements are true (T) or false (F): An excess of carbon dioxide causes an anormal increase in the greenhouse effect triggering a chance in the climate on a global level
TRUE
FALSE
- 6. Multiple Choice
Indicate which of the following changes of state are progressive.
Sublimation and solidification
Fusion and reverse sublimation
Vaporization and condensation
Melting and vaporization
- 7. Multiple Choice
Indicate thestate of matter depending of the properties of matter in each state: The only motion of the particles is vibration. They do not move much relative to each other.
Solid
Liquid
Gas
- 8. Multiple Choice
Indicate thestate of matter depending of the properties of matter in each state: The forces of attraction between particles are intermediate
Solid
Liquid
Gas
- 9. Multiple Choice
Indicate thestate of matter depending of the properties of matter in each state: The forces of attraction between particles are almost null
Solid
Liquid
Gas
- 10. Multiple Choice
Is to move gradually from one to another. Liquids and gases have this propertie.
To flow
Compression
Diffusion
- 11. Multiple Choice
Is a phenomenon that occurs when one substance mixes with another. (Ink in water)
To flow
Compression
Diffusion
- 12. Multiple Choice
Is the process in which we can reduce the volume of a substance by appliying force to it.
To flow
Compression
Diffusion
- 13. Multiple Choice
We can change the pahse of a system without changing its pressure in two ways:
Cooling and heating
Difussion and flow
None of the above
- 14. Multiple Choice
Lowering the temperature...
Exothermic phase changes
Endothermic phase changes
None of the above
- 15. Multiple Choice
Rasing the temperature of the system...
Exothermic phase changes
Endothermic phase changes
None of the above.
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