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Pure physical - until you use soap.
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∙ 8y ago
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What is an exaple of physical change?
A type of change in which the form of matter is changed to another form is called a physical change. Thus the chemical change does not occur, but only a physical change occurs in it. Example: When ice melts into water When water is boiled, and it changes into water vapor.
What kind of change is burning of paper different from tearing it?
Tearing paper is a simple physical change; you are taking a whole and dividing it without changing its chemical composition. Burning paper is a chemical change; the paper chemically reacts with oxygen in the air in the presence of heat; oxidation.
Is taking a shower essential?
Yes.
What are the 5 characteristics of chemical change?
During a chemical change the structure of molecules (as chemical composition) is changed. Signs of chemical reactions may be: - Gas release - Formation of a precipitate - Change of color - Change of odor - Change of pH - Change of aspect - Change of viscosity - Change of the temperature - Visible formation of new compounds
Is the conversion of two compounds into a solution a chemical change?
Not necessarily. There's something called the enthalpy of mixing which can be responsible for lowering the temperature when two substances are mixed even if no chemical reaction occurs. It may also be an endothermic reaction; if there are other signs of a reaction (formation of a precipitate, evolution of a gas, color change, etc.) then it probably is a chemical reaction.
Is taking butter melting a physical or chemical change?
A physical change
Are clouds a physical or chemical change?
Physical because no reaction is taking place.
What physical change is shown taking place in burning wood?
chemical change.
Is sanding wood is a physical or chmical change and why?
It is physical change. There are no chemical reactions taking place when you sand wood.
Why is a phase change a physical change and NOT a chemical change?
Because no chemical reaction is taking place. It is the same substance, just in a different state of matter.
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.
Is adding HCl to Mg physical change?
No. There is a change in substance taking place, so it would be considered a chemical change.
What type of change is a state of matter?
physical... the matter itself does not change. That would imply that a chemical change is taking place
What does fizzing mean in a chemical reaction?
It is a sign that a chemical change is taking place, rather than a physical change.
Is reaction with acid a physical or chemical property?
A physical reaction is when no new substances are formed, there is a change of state eg ice melting to a liquid. A chemical change is when the reaction forms a new substance. eg gas bubbles. An acid reaction can be both. You need to look at the reaction taking place, look for change of state (physical) or any colour change or gas bubbles (chemical).
Is flotation a physical change or chemical change?
Flotation is a physical change. It involves changing the density or buoyancy of an object in a liquid to make it float or sink. There is no chemical reaction taking place during flotation.
Is a change in the temperature a physical change?
Not necessarily. It does, however, indicate that a reaction is taking place.
