MindMap Gallery physical state changes
Change of state of matter in physics refers to the process of matter changing from one state to another. It mainly introduces several basic physical state changes in physics and is suitable for physical enlightenment.
Edited at 2024-11-01 20:18:10This is a mind map about the annual work plan of the three pillars of human resources. The main contents include: strategic human resources planning, talent recruitment and allocation, employee performance management, employee training and development, employee relationships and communication, employee welfare and care, human resources information system construction, regulatory compliance and risk management, and organizational culture construction.
This is a mind map for the diagnosis and treatment of acute cerebral hemorrhage in patients with hemodialysis. The annual incidence of acute cerebral hemorrhage in patients with hemodialysis is (3.0~10.3)/1000, and the main cause is hypertension. Compared with non-dialysis patients, the most common bleeding site is the basal ganglia area, accounting for 50% to 80%; but the bleeding volume is large and the prognosis is poor, and the mortality rate is 27% to 83%. Especially for patients with hematoma >50ml, hematoma enlarged or ventricular hemorrhage on the second day after onset, the prognosis is very poor.
The logic is clear and the content is rich, covering many aspects of the information technology field. Provides a clear framework and guidance for learning and improving information technology capabilities.
This is a mind map about the annual work plan of the three pillars of human resources. The main contents include: strategic human resources planning, talent recruitment and allocation, employee performance management, employee training and development, employee relationships and communication, employee welfare and care, human resources information system construction, regulatory compliance and risk management, and organizational culture construction.
This is a mind map for the diagnosis and treatment of acute cerebral hemorrhage in patients with hemodialysis. The annual incidence of acute cerebral hemorrhage in patients with hemodialysis is (3.0~10.3)/1000, and the main cause is hypertension. Compared with non-dialysis patients, the most common bleeding site is the basal ganglia area, accounting for 50% to 80%; but the bleeding volume is large and the prognosis is poor, and the mortality rate is 27% to 83%. Especially for patients with hematoma >50ml, hematoma enlarged or ventricular hemorrhage on the second day after onset, the prognosis is very poor.
The logic is clear and the content is rich, covering many aspects of the information technology field. Provides a clear framework and guidance for learning and improving information technology capabilities.
physical state changes
temperature
concept
In physics, temperature is usually used to express the hot or cold degree of an object.
thermometer
Liquid thermometers are made based on how hot or cold an object is
The temperature of a mixture of ice and water at standard atmospheric pressure is 0 degrees Celsius, and the temperature of boiling water is 100 degrees Celsius.
The measuring range of the thermometer is 35 degrees Celsius to 42 degrees Celsius
Use of thermometer
The pointer is based on the principle of a thermometer, which is the thermal expansion and contraction of a solid.
First, see clearly the measuring range, and secondly, see clearly the graduation value of the thermometer.
All the glass bubbles should be put into the liquid being measured, and should not touch the bottom or wall of the container. 2. Wait until the thermometer's reading stabilizes before taking a reading. The three lines of sight should be level with the liquid level in the thermometer
melt
concept
The process of changing from solid to liquid
Experiment (study the melting changes of sea waves and paraffin)
The experimental device is from bottom to top. The reason why the water bath is heated is to facilitate the observation of sea waves and the melting process of paraffin.
The temperature of sea waves remains constant during melting, that is, sea waves are crystals
Paraffin wax is amorphous
subtopic
melting point
The temperature at which a crystal melts is called the melting point, while amorphous crystals do not have a fixed melting temperature
melting endothermic
solidification
concept
The process of changing from liquid to solid
freezing point
The freezing point of the same substance is the same as its melting point
The fixed temperature at which a liquid solidifies to form crystals is called the freezing point
Solidification exotherm
Vaporization
Vaporization phenomenon absorbs heat
concept
The process of matter changing from liquid to gaseous state
Boiling: Boiling is a violent vaporization phenomenon that occurs simultaneously inside and on the surface of a liquid.
Experiment: After water boils, the temperature does not continue to rise
Evaporation: A gaseous change that can occur at any temperature. Evaporation only occurs on the surface of an object.
Methods to speed up evaporation: 1. Increase the temperature of the object; 2. Increase the surface area of the liquid; 3. Speed up the flow of air on the surface of the liquid.
The similarities between evaporation and boiling: both are vaporization phenomena; the differences: evaporation occurs on the surface of an object, while boiling occurs inside and on the surface; boiling needs to reach the boiling point, while evaporation can occur at any temperature
Vaporization endothermic
liquefaction
concept
The process of matter changing from gaseous to liquid state
White gas is small water droplets condensed by exhaled water vapor when it encounters cold air; such as dewdrops and white mist
Liquefaction method: 1. Lowering the temperature; 2. Compressing the volume
exotherm of liquefaction
sublimation and sublimation
The process of a substance changing directly from a solid state to a liquid state is called sublimation; the process of a substance changing directly from a gaseous state to a solid state is called sublimation
Frost, snow, ice flowers, rime, etc. are all phenomena of sublimation. Camphor tablets; frozen clothes in winter slowly dry out, which is a phenomenon of sublimation.
Ice flowers are in the window
Sublimation absorbs heat, sublimation releases heat