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Chemical change is when the composition of your elements or solution change. In a simple way to say it, it's when you no longer have the same elements or solution that you started with.
You can determine if a reaction is chemical, by observing the chemical properties. Usually it's when there's a color change, a new substance formed, etc..
On the other hand, physical change is when the composition of your substance stay the same, but the physical properties change. For example, liquid water evaporate into H2O gas.
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∙ 14y ago
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How do you decide whether an observed property of matter is a chemical property?
If the property can be observed without changing the chemical composition of the substance, then it is a physical property. If the property can be observed only through a chemical reaction, then it is a chemical property.
How might a thermometer help you decide if there was any chemical change on mixing iron and charcoal?
For a chemical change to occur, there must be a chemical reaction. A chemical reaction would be either endothermic (uses energy, mostly heat), or exothermic (produces energy, again mostly heat). Any change in temperature of the reactants, as measured by a thermometer, will tell you not only ifa chemical reaction occurred, but also which kind of chemical reaction. No temperature change usually indicates that no reaction has occurred, a decrease in temperature would indicate an endothermic reaction, while an increase in temperature would indicate an exothermic reaction.
What causes atom to react with each other?
A chemical reaction
What chemical is formed in a chemical reaction?
The chemical or chemicals formed in a chemical reaction are called the product of the chemical reaction.
Is an icy hot a chemical reaction or a physical reaction?
Its a chemical reaction.
Is bleach a chemical reaction?
Bleach is a chemical. The process of bleaching something is a chemical reaction.
What is a chemical change also referred to as?
Chemical reaction
What is another term for chemical change?
A chemical change is a chemical reaction.
What is a process that changes one or more new substances?
I think the answer you're looking for is a "Chemical Reaction". For instance, combining Hydrochloric Acid (HCl) and Sodium Hydroxide (NaOH) will cause a Chemical Reaction resulting in salt water (NaCl + H20).
How do you decide whether an observed property of matter is a physical property?
If the property can be observed without changing the chemical composition of the substance, then it is a physical property. If the property can be observed only through a chemical reaction, then it is a chemical property.
How does an engine have a chemical reaction?
Combustion is a chemical reaction.
Is chemical reaction alive?
No. A chemical reaction is not alive.
