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Is it a physical or chemical change when the liquid mercury in a thermometer expands as it is heated?
physical change
What is the red stuff in a thermometer?
The red liquid in a thermometer is typically mercury. Mercury is used because it expands and contracts uniformly with changes in temperature, allowing for accurate temperature readings. However, due to the toxicity of mercury, many modern thermometers use safer alternatives like alcohol or digital sensors.
Is oxidizing mercury a physical or chemical change?
Oxidizing mercury is a chemical change because it involves a rearrangement of atoms in the mercury molecules to form new compounds (such as mercury oxide). This results in a change in the chemical composition of the substance.
How is mercury in a thermometer poisonous?
Mercury in a thermometer is poisonous if it is inhaled or ingested. When a thermometer breaks, mercury vapor can be released into the air, which can be harmful if breathed in. Additionally, if mercury is ingested, it can be absorbed into the bloodstream and cause poisoning.
Does mercury stay in the tube or escape into the air?
Mercury stays contained in the tube of a mercury thermometer when in use. It does not escape into the air as long as the thermometer is intact. However, if the thermometer is broken or improperly disposed of, mercury vapor can be released into the air, which is harmful to health.
Is alcohol expanding in thermometer on a hot day a physical or a chemical change?
1 physical 2 ITS MERCURY THAT IS IN A THERMOMETER
Is it a physical or chemical change when the liquid mercury in a thermometer expands as it is heated?
physical change
What is the mercury called on a clinical thermometer?
The liquid in a clinical thermometer is called mercury. It is used to measure body temperature by expanding and rising within the thermometer.
Hypothesis for a thermometer?
"Higher temperatures will result in the mercury in the thermometer expanding and rising, while lower temperatures will cause the mercury to contract and fall."
Why the reading of thermometer is taken when the mercury stop expanding?
The mercury will expand and rise up the thermometer tube until it reaches the temperature of the air around it. When it stops expanding, it is the same temperature as the air, and therefore gives an accurate reading.
Is there a chemical reaction in the expansion of mercury?
If mercury expands because its temperature is increased, there is no chemical reaction; this is a physical change. If there is any chemical change in the expansion of mercury, it must be due to the formation of some new compound, so that at least part of what is expanding is not mercury any longer but is now something else.
What is the liquid mercury in a thermometer expands as its heated what is this a?
physical change
What is mercury used for in a thermometer?
The thermal expansion of mercury is proportional and linear to temperature.
Why does the mercury in the thermometer go up when the temperature is high?
In a mercury thermometer, the mercury expands when it is heated, causing it to rise in the thermometer's narrow tube. This increase in volume is a physical property of mercury known as thermal expansion. The height of the mercury column in the thermometer is then used to measure the temperature.
What is a variable in a thermometer?
In a thermometer, a variable is the temperature being measured. Thermometers detect changes in temperature by expanding or contracting a substance, such as mercury or alcohol, which then indicates the temperature on a scale.
What color is the Mercury in a Mercury thermometer?
Mercury in a Mercury thermometer is typically silver in color.
What is the red stuff in a thermometer?
The red liquid in a thermometer is typically mercury. Mercury is used because it expands and contracts uniformly with changes in temperature, allowing for accurate temperature readings. However, due to the toxicity of mercury, many modern thermometers use safer alternatives like alcohol or digital sensors.
