Question

5. Расскажите о физических свойствах воды. Пж сросно​

Answer 1

Ответ:

1.Агрегарное состояние- жидкость

2.Не имеет цвет, вкус, запах.

3.Химическая формула- H2O

4.Температура замерзания-0°

5.Температура кипения-100°

6.Высокая теплопроводность.

7.Слабая электропроводность.

Answer 2

Physical Properties of Water

Water is a unique substance with several distinctive physical properties. Here are some key characteristics of water:

1. State of Matter: Water is a liquid at room temperature and atmospheric pressure. It can exist in three states of matter: solid (ice), liquid (water), and gas (water vapor).

2. Density: Water has a relatively high density compared to other liquids. At 4 degrees Celsius, water has its highest density, and as the temperature decreases or increases from this point, the density of water decreases.

3. Boiling and Freezing Points: The boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit) at standard atmospheric pressure. The freezing point of water is 0 degrees Celsius (32 degrees Fahrenheit).

4. Heat Capacity: Water has a high specific heat capacity, which means it can absorb and retain a significant amount of heat energy without a large change in temperature. This property helps regulate Earth's climate and makes water an effective coolant.

5. Thermal Conductivity: Water has relatively high thermal conductivity, meaning it can transfer heat energy efficiently. This property allows water to distribute heat evenly and quickly.

6. Surface Tension: Water exhibits surface tension, which is the cohesive force between water molecules at the surface. This property allows water to form droplets and enables certain insects to walk on water.

7. Solvent Properties: Water is often called the "universal solvent" because it has the ability to dissolve a wide range of substances. This property is due to water's polarity and its ability to form hydrogen bonds with other molecules.

8. Viscosity: Water has a relatively low viscosity, meaning it flows easily. However, the viscosity of water can increase with temperature and the presence of impurities.

9. Refractive Index: Water has a refractive index of about 1.33, which means it can bend or refract light as it passes through.

10. pH Level: Pure water has a neutral pH of 7, indicating it is neither acidic nor alkaline.

These are just a few of the physical properties that make water a unique and essential substance for life on Earth.