Final answer:
Water cannot stay liquid below zero degrees Celsius. Diamond requires extremely high temperatures to burn. Alcohol can affect the brain's structure and function. Glass is an amorphous solid, not a liquid. Acids can be identified using litmus paper or pH indicators.
Step-by-step explanation:
Water cannot stay liquid below zero degrees Celsius. When the temperature of water drops below zero, it freezes and turns into ice. This is because the hydrogen bonds between water molecules become stronger and the molecules arrange themselves into a crystal lattice structure, which is characteristic of ice.
As for lighting diamond on fire, diamond is actually very difficult to burn. It is made of carbon and requires extremely high temperatures (around 850 degrees Celsius in the presence of oxygen) to start burning. However, under normal conditions, diamond does not catch fire easily.
Alcohol affects the brain differently depending on the amount consumed and the frequency of consumption. Regular and heavy alcohol consumption can lead to damage to the brain, as alcohol interferes with the communication between brain cells and affects the brain's structure and function.
Glass is not a liquid in the traditional sense. It is classified as an amorphous solid, which means that its molecular arrangement is more like that of a liquid than a crystalline solid. However, it still has a rigid structure and does not flow like a liquid. The misconception that glass is a liquid comes from historical examples of old glass windows that appear thicker at the bottom, but this is actually due to the way they were made, not because the glass has flowed over time.
To determine if something is an acid, you can perform a simple experiment using litmus paper or pH indicators. Acids have a pH value lower than 7 and typically turn litmus paper red or change the color of pH indicators to indicate acidity. Common examples of acids include vinegar (acetic acid) and lemon juice (citric acid).