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- Multiple ChoicePlease save your changes before editing any questions.
Indicate which of these characteristics correspond to evaporation (E) and which correspond to boiling (B): A surface phenomenon
Evaporation
Boiling
- Multiple ChoicePlease save your changes before editing any questions.
Indicate which of these characteristics correspond to evaporation (E) and which correspond to boiling (B):It occurs at a given temperature
Evaporation
Boiling
- Multiple ChoicePlease save your changes before editing any questions.
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.
- Multiple ChoicePlease save your changes before editing any questions.
Indicate if the following statements are true (T) or false (F): Gases have not got a mass and therefore can diffuse.
TRUE
FALSE
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
Indicate which of the following changes of state are progressive.
Sublimation and solidification
Fusion and reverse sublimation
Vaporization and condensation
Melting and vaporization
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
Indicate thestate of matter depending of the properties of matter in each state: The forces of attraction between particles are intermediate
Solid
Liquid
Gas
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
Is to move gradually from one to another. Liquids and gases have this propertie.
To flow
Compression
Diffusion
- Multiple ChoicePlease save your changes before editing any questions.
Is a phenomenon that occurs when one substance mixes with another. (Ink in water)
To flow
Compression
Diffusion
- Multiple ChoicePlease save your changes before editing any questions.
Is the process in which we can reduce the volume of a substance by appliying force to it.
To flow
Compression
Diffusion
- Multiple ChoicePlease save your changes before editing any questions.
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
- Multiple ChoicePlease save your changes before editing any questions.
Lowering the temperature...
Exothermic phase changes
Endothermic phase changes
None of the above
- Multiple ChoicePlease save your changes before editing any questions.
Rasing the temperature of the system...
Exothermic phase changes
Endothermic phase changes
None of the above.