1. Pour equal parts of tap water and rubbing alcohol into the bottle, filling about 1/8 to a 1/4 of the bottle.
2. Add a couple of drops of food coloring and mix.
3. Put the straw in the bottle, but don't let the straw touch the bottom (DO NOT DRINK THE MIXTURE).
4. Use the modeling clay to seal the neck of the bottle, so the straw stays in place.
5. Now hold your hands on the bottle and watch what happens to the mixture in the bottle.
You can make a thermometer with water, and in fact Galileo invented a rudimentary water thermometer in 1593. However, using other materials such as alcohol or mercury allows you to measure a greater variation in temperature.
You can use a food thermometer or a candy thermometer for measuring the temperature of boiling water. Make sure the thermometer is heat-resistant and can handle high temperatures. Insert the thermometer into the water without touching the bottom of the pot for an accurate reading.
To wash a thermometer, use soap and water to clean the surface of the thermometer. Do not soak the thermometer in water and ensure to dry it thoroughly before using again to prevent damage. Make sure to follow the manufacturer's instructions for cleaning to maintain accuracy and safety.
If surrounding water temperature is lower than the water in the thermometer, heat will transfer from the water in the thermometer to the colder water causing the liquid in the thermometer to drop.
When a thermometer enters cold water, the temperature reading on the thermometer will decrease as the thermometer adjusts to the temperature of the water. The liquid inside the thermometer will contract and move down the scale, indicating the lower temperature of the cold water.
You first put ice into a cup then add cold water, then stir. You then wait until it is 0 degrees ( which will take about 5 minutes ) then you put the thermometer in and make sure it is 0 degrees celsius. Then boil water and put a thermometer in and make sure it's 100 degrees celsius.
a thermometer
Which thermometer is most suitable for measuring boiling point of water mercury or alcoholic thermometer
The question must be asked carefully. If the thermometer is in water ice and there is no liquid water, and there is one atmosphere of pressure, the thermometer can read anything from the freezing point of water and lower, depending on the range of the thermometer. If the thermometer is in a stable mix of water and ice, it will read the freezing point of water.
Charles WingerThe Thermometer was invented by Galileo Galilei in 1593. His thermometer consisted of water in a glass bulb; the water moved up and down the bulb as the temperature changed.
Water's freezing point is 0°C, which is relatively high compared to other liquids used in thermometers. This can limit the temperature range in which the thermometer can accurately measure. Additionally, when water freezes, it expands, which can damage the thermometer.
The first water thermometer was invented in the 16th century. In 1593, Galileo Galilei improved the existing thermoscope by inventing a basic water thermometer.