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Precipitation in weather terms (rain, snow, etc.) is a physical process.
Precipitation in chemical terms (e.g. lead iodide falling out of solution) is a chemical change.
What else can I help you with?
What are the six types of evidence for a chemical change?
Types of evidence for chemical change include: A gas is evolved. A precipitate appears or disappears. Heat may be evolved or absorbed. A color change occurs. A substance disappears.
What are the evidences of physical change?
* change shape * change state(solid liquid and gas) and * change sizes
What are five clues you would consider before diciding whether a change you observe is physical or chemical?
The 5 clues to a chemical change are:energy (heat or light) is given off, or heat is absorbedthere is a precipitate (which means a solid has formed at the bottom of a solution)the change is hard to reverse or irreversiblethere are bubbles which means a gas is being releasedthe solution turns a different colourTo be 100% certain that it is a chemical change, at least 2 or 3 of these things must happen.
Is painting a door a physical or chemical change?
Physical change of the paint, not the door.
When sandpaper smooths a piece of wood what kind of change is it?
this is a physical change
Is making a precipitate a physical or chemical change?
There are a variety of precipitates that are formed in a variety of ways, so depending upon which precipitate you are talking about, it can involve either a physical or a chemical change.
Is a precipitate a phsical change?
Yes, a precipitate is a physical change. It occurs when two solutions react to form a solid that settles out of the solution. This is a reversible change as the solid can be redissolved back into the solution.
Is milk thickening a chemical or physical change?
Milk thickening is generally considered to be a physical change because it involves a change in the physical state of the milk without altering its chemical composition. Heating milk causes the proteins to denature and form a network that traps water molecules, resulting in a thicker consistency.
What type of change does precipitate indicate?
The formation of a precipitate typically indicates a chemical change, as it involves the creation of a new, insoluble solid substance from the mixing of two solutions. This reaction often results in the release or absorption of energy, indicating a change in the chemical properties of the substances involved.
Is dissolving salt in water a physical or chemical change or is it a physical and chemical change?
It's a physical change. No NEW substances are created. And if you evaporate water, you're back to square one (can be separated). Also, there is no change in color, no precipitate, no odor and no gas released.
How is a precipitate evidence for a chemical reaction?
A precipitate forms when two aqueous solutions react to produce an insoluble solid. The formation of a precipitate indicates that a chemical reaction has occurred, as the reactants have undergone a change in chemical composition to produce a new substance with different physical properties. This is observable evidence of a chemical change taking place.
What is the solid substance that falls out of a solution?
It is called precipate. Precipitate is an insoluble solid and is formed during a chemical reaction. Hope this helped!
How do you know when there is No Reaction in a chemical reaction?
Some indicators of a chemical reaction are:- change of color- change of odor- release of a gas- change of the temperature- change of the viscosity- formation of a precipitate- change of general appearance- possible explosion - possible chemiluminescence - formation of new compounds
When a precipitate is formed from the mixture of two chemicals is it a physical or chemical change?
Chemical. Four good indicators of a chemical change are: # Change in Color # Change in Temperature # Creation of a gas # Creation of a precipitate These don't always indicate a chemical change, but are good guidelines if you are unsure.
What is the difference between physically and chemical changes?
A chemical change is when something cannot be reversed and often a precipitate (solid) is formed. While a physical change can be reversed e.g bending a piece of wire.
Is this statement true Ice being broken into small bits is an example of a chemically change?
No it is not, as the ice will still retain its chemical properties. This is an example of a physical change. Remember that the indicators of a chemical change are a change in colour, a change in odour, a change in temperature, the formation of a precipitate, or a gas being given off.
How do you know if a chemical change has occurred versus a physical one?
A chemical change results in the formation of new substances with different chemical properties, such as changes in color, odor, or the formation of gas or precipitate. A physical change, on the other hand, only affects the physical state of a substance, without changing its chemical composition.
