Question

Рассмотри таблицу изменений температуры воды. Напиши расширяется или сжимается вода в каждом случае.ТЕМПЕРАТУРА ВОДЫ Ι₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋ Ι ЧТО ПРОИСХОДИТ С ВОДОЙ????БЫЛА·⇔⇔⇔ СТАЛО Ι+18с +35с Ι₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋+60с +45с Ι₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊₊+80с +90с Ι⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻ 0с -2с Ι⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻

Answer 1

+18с +35с вода расширяется  прохладная-теплая
+60с +45с вода сжимается    горячая-теплая
+80с +90с вода расширяется горячая-очень горячая
0с -2с  вода сжимается вода-лёд

Answer 2

Changes in Water Temperature and Expansion/Contraction

When water undergoes a change in temperature, it can either expand or contract depending on the specific temperature range. The expansion or contraction of water is a result of its unique properties, particularly its density and thermal expansion coefficient.

Here is an overview of the changes in water temperature and whether it expands or contracts in each case:

1. From 18°C to 35°C: Water expands as it heats up within this temperature range. The increase in temperature causes the water molecules to move faster and spread out, leading to an expansion in volume. This expansion is due to the thermal expansion of water [[1]].

2. From 60°C to 45°C: Water contracts as it cools down within this temperature range. The decrease in temperature causes the water molecules to slow down and come closer together, resulting in a decrease in volume. This contraction is also a consequence of the thermal expansion properties of water [[2]].

3. From 80°C to 90°C: Water expands as it heats up within this temperature range. Similar to the first case, the increase in temperature causes the water molecules to move faster and spread out, leading to an expansion in volume [[3]].

4. From 0°C to -2°C: Water contracts as it cools down within this temperature range. However, there is an exception at around 4°C, where water reaches its maximum density. As the temperature drops below 4°C, the water molecules start forming a crystalline structure, which causes the water to expand and become less dense. This expansion is due to the unique behavior of water near its freezing point [[4]].

In summary, water generally expands when heated and contracts when cooled, with some exceptions near its freezing point. These changes in volume are a result of the thermal expansion properties of water.

I hope this explanation clarifies the changes in water temperature and whether it expands or contracts in each case. Let me know if you have any further questions!