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What is the name and chemical formula for the gas that caused the professor voice to change?
It is the element helium, symbol He.
The change in sound is because helium is much lighter than air and thus the speed of sound in helium is much faster than the speed of sound in air. This change in the speed of sound retunes the resonant chambers in the vocal tract to a higher frequency, making the voice sound "chirpy" while the helium is present.
What else can I help you with?
Is ice melting at 0 degrees Celsius a chemical property?
No, the process of ice melting at 0 degrees Celsius is a physical change, not a chemical property. It involves a phase change from a solid to a liquid state without any change in the chemical composition of the ice.
What is the formula for aqueous lead II nitrate?
Pb(NO3)2
What is another term for chemical change?
A chemical change is also referred to as a chemical reaction. It typically involves the transformation of substances into new substances with different chemical compositions.
What does the 2 in front of the chemical formula for silver nitrate mean?
The subscript 2 in front of the chemical formula for silver nitrate (AgNO3) indicates that there are two moles of silver ions (Ag+) present in the compound for every one mole of nitrate ions (NO3-). It does not change the individual elements' charges or valencies, but simply indicates the ratio in which they are combined.
Potassium chlorate turns to oxygen gas is that chemical change or physical change?
The reaction of potassium chlorate turning into oxygen gas is a chemical change because the composition of the substance is altered, resulting in the formation of different molecules with different properties.
Is the chemical formula H2o physical or chemical change?
The chemical formula H2O represents water. It is a chemical formula that describes the composition of a substance, in this case, water. Therefore, it is related to a chemical change rather than a physical change.
What are two effects caused by a chemical change?
Two effects that are caused by a chemical change are changes from one substance into another. Another effect that can be caused by a chemical change is a change in the temperature of the surrounding system and substance, or a change in color of the substance.
Is melting ice into water a chemical change?
No. It is a physical change. The chemical formula for water is H2O, and that is also the chemical formula for ice. So there is no chemical change taking place, only a change in the state of matter.
Can a chemical cause a chemical change?
A chemical change can be caused by a reaction. It an element or compound reacts with another, it is known as a chemical change.
What kind of change is caused by cutting?
Chemical Change
Is rusting a nail a physical change or chemical change?
A nail rusting is a chemical change. The chemical formula of the metal completely changes, adding oxygen to the formula. Iron changes from Fe to FeO2 , or to Fe2O3
What is needed for a chemical change to occur one or to answer?
chemical formula
Why ignition of matches is a chemical change?
The chemical formula is modified.
What has to happen for a chemical change to happen?
At least 2 of the reactants must change their chemical formula.
How can a physical change be distinguished from a chemical change?
A physical change doesn't modify the structure of a substance (the chemical formula).
Is taste a physical or chemical change?
Chemical, caused by saliva, without saliva you cannot taste anything
When ice melts why can you tell there is not a chemical change?
Melting is not a chemical change because the chemical formula of water remain unchanged.
