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What are five clues you would consider before diciding whether a change you observe is physical or chemical?
Wiki User
∙ 9y ago
The 5 clues to a chemical change are:
- energy (heat or light) is given off, or heat is absorbed
- there is a precipitate (which means a solid has formed at the bottom of a solution)
- the change is hard to reverse or irreversible
- there are bubbles which means a gas is being released
- the solution turns a different colour
To be 100% certain that it is a chemical change, at least 2 or 3 of these things must happen.
Wiki User
∙ 14y ago
Wiki User
∙ 9y agoThere are multiple clues that you can use before deciding whether a change that you observe is a physical change or a chemical change. Five of these are bubble formation, color changing, not being able to reverse the change, the formation of a precipitate, and light or heat emission.
Wiki User
∙ 6y agoPhysical is what you can see(like dimples, hair color, ect...)
Chemical is inside your body that you cant see.
1. Heat or light is given off. 2.Bubbles form which means a gas has been produced. 3.A precipitate forms (A precipitate is a solid substance that forms in a liquid solution) 4.A new colour appears. 5.The change is difficult to reverse.
Wiki User
∙ 9y agoIf there is a color change. If bubbles formed because this would indicate a chemical change. If an odor is given off. If a gas has been produced. If light or heat is given off.
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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 a bicycle changes color as it rusts a chemical or a physical change?
It is a chemical change. Here oxidation of Iron occurs and being oxidation reaction, it is 'exothermic' reaction.Through it takes prolonged period and it is difficult to observe it, you can deduct it. As 'all' oxidation reactions are 'exothermic'.
What is something that your senses tell you about an object?
Something you can observe about an object using your senses is a physical property.
Can reality be measured?
Reality in reference to the physical world or nature can be observed and measured. But reality also consists of things with which we can't observe and measure such as values, morality, and the supernatural.
How do you observe things in science?
How
Chemical or physical something you can observe?
Physical changes are those that can be observed.
Is yellow solid physical or chemical property?
physical (because you can observe it without inducing a chemical reaction).
What are chemical properties harder to observe than physical properties?
they are harder to observe because youcan't be seen.
Is volume a physical property or chemical?
Volume is a physical property.
What properties are not as easy to observe?
Chemical changes are considered unseen because they occur at the atomic level, changing the actual structure of the thing. This is in comparison to a physical change, which is visible.
What chemical and physical weathering do you observe in your home and campus Describewhat happens to the object?
itjj
Must a new substance be formed when you observe a chemical property?
Yes , it should or else it is a physical property
What is the differs between physical property and chemical property?
The way I remember the difference, is: a physical property is a property that you can observe without changing it (or observe without a chemical reaction). So properties like melting point, boiling point, density, color, hardness are all physical properties. A property like 'reacts with water' could only be observed by performing the reaction to observe the change.
What is the difference between physical property and chemical property?
The way I remember the difference, is: a physical property is a property that you can observe without changing it (or observe without a chemical reaction). So properties like melting point, boiling point, density, color, hardness are all physical properties. A property like 'reacts with water' could only be observed by performing the reaction to observe the change.
What is the difference between chemical property and physical property?
The way I remember the difference, is: a physical property is a property that you can observe without changing it (or observe without a chemical reaction). So properties like melting point, boiling point, density, color, hardness are all physical properties. A property like 'reacts with water' could only be observed by performing the reaction to observe the change.
Is it true Chemical properties aren't as easy to observe as physical properties?
Yes, physical are on the outside and can be observed in a matter of seconds, whereas chemical properties have to be tested, which can take as long as years
17 Explain how color can be classified as both a physical property and as one indication of a chemical change?
you can observe it without changing it.
