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Do chemical changes affect the chemical structure of a substance?
yes chemical properties do change a substance physical properties just change the physical shape or look!!!
Is weathering a physical or chemical change?
physical change
What are the characteristic of physical change?
Some common characteristics of physical changes are change in texture, change in shape, and change in state. There can also be a change in temperature and a change in color, but these are also common characteristics of chemical changes. A physical change does not change the composition of the original substance.
Is producing something new a physical or a chemical change?
That depends on your definition of producing something new. If you cut lumber to build a table ... you have produced something new, but that is a physical change. Wood is still wood. But if you mean combining two or more substances, like hydrogen gas and oxygen gas, and, after burning, you form water, then that is a chemical change.
Why are boiling and melting examples of physical changes?
You know if it's a chemical chagewhen two or more of the following have happened: 1. a precipitate has formed(bubbles) 2. heat is absorbed or released 3. there is a change in odor 4. there is a change in colour 5. the change is diffiult to reverse 6. starting material is used up 7. a material with new properties is formed A physical change may only be a change in state and the change should be easy to reverse
How are physical properties differ from physical changes?
A physical change would be a change in a physical property. A "physical property", by itself, may or may not change.
What are 6 physical properties a physical substance may posses?
Examples: density, thermal conductivity, electrical resistivity, thermal expansion, ductility, malleability, hardness etc.
Do chemical changes affect the chemical structure of a substance?
yes chemical properties do change a substance physical properties just change the physical shape or look!!!
In a physical change some of the physical properties of the substance may be altered and the chemical composition?
No. In a physical change, the substance maintains its chemical composition.
Which property of a substance does not change when the amount of the substance changes?
All substances have distinct physical and chemical properties, and may undergo physical or chemical changes. Physical properties, such as hardness and boiling point, and physical changes, such as melting or freezing, do not involve a change in the composition of matter.
Why would it be difficult to identify a gas by its physical properties?
Various gasses may have similar physical properties.
What is true about a compound physical properties compare to those of the element it is made of?
The physical properties of a compound may be entirely different from the physical properties of the elements from which the compound is made.
Do chemical change and physical change always occur sepretly?
Any physical changes that change during a chemical reaction are the consequence of the products physical properties. The melting point may be much lower than the reactants and change state but ultimately it was the properties responsible for this and not the chemical reaction itself. If anything there are situations where the two both occur somewhat simultaneously as well as situations where chemical change doesn't proceed with a physical change and vice versa.
Differences between chemical and physical properties?
In a physical change of matter, no new substances are formed. However, physical properties such as size, shape, color, or phase may change. Dissolving, melting, evaporating and grinding are examples of physical change.As a result of chemical change, one or more new substances with new and different properties are formed. The new substances are different from the original substance. Burning and the rusting of iron are examples of chemical change.
Is variables a physical or chemical property?
Variables may be chemical but also physical properties.
What is the most important question to ask to determine whether a change is physical or chemical?
did the composition change
How are chemical and physical properties related?
Physical properties are those that can be observed without changing the identity of the substance. The general properties of matter such as color, density, hardness, are examples of physical properties. Properties that describe how a substance changes into a completely different substance are called chemical properties. Flammability and corrosion/oxidation resistance are examples of chemical properties.
