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The properties of a Chemical change are these : A) Something new is produced- Preciptiate, Smoke, Colour. B) Light or heat is given off. [ Example- Crumbling of a brownie is a physical change, because nothing new is produced. but when you are baking the brownie, it is a Chemical change, because heat is given off.
Wiki User
∙ 15y ago
Wiki User
∙ 9y agoSome 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 chemiluminiscence -formation of new compounds
Wiki User
∙ 15y agothe actual chemical compositions have changed
Wiki User
∙ 13y agoit is a change in which new substances are formed. the process is irreversible. light and heat is evolved.
Wiki User
∙ 13y agoThere are many different possible property changes in a chemical change. You must post the specific reaction for anyone to tell you exactly.
Wiki User
∙ 11y agoA chemical change results in new products with different chemical compositions than the reactants.
Wiki User
∙ 9y agoExamples: enthalpy of reaction, activation energy, reaction rate, order of reaction, exo- or endothermic reaction etc. etc.
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What do chemical equations describe?
A chemical formula describe and identify a chemical compound.
What is the best definition for chemistry?
Subject of chemistry studies are chemical composition, chemical structures, chemical reactions, chemical properties, synthesis of chemicals, etc.
What properties are used to describe matter?
Chemical Properties Physical Properties Etc.
Describe the role of energy in chemical reactions?
Chemical reactions that release energy often occur spontaneously. Chemical reactions that absorb energy will not occur without energy.
Why energy is necessary to chemical reactions and describe some common sources of energy.?
Explain why energy is necessary to chemical reactions, and describe some common sources of energy.
What do chemical equations describe?
A chemical formula describe and identify a chemical compound.
What is the best definition for chemistry?
Subject of chemistry studies are chemical composition, chemical structures, chemical reactions, chemical properties, synthesis of chemicals, etc.
Do chemical reactions describe laws of conservation?
Chemical reactions respect the law of mass conservation.
Are neutrons important in chemical reaction?
No, absolutely not. There are much smaller particles, first Electrons (which are part of reactions), Then Quarks that neutrons and protons are made of (and are part of reactions), and much, much smaller particles after that also are involved in chemical reactions.
Do chemical equations describe chemical reactions?
A chemical equation is a short way to describe a chemical reaction, so yes.
What determine the atom chemical properties?
Chemical reactions depends on the valence electrons.
What properties are used to describe matter?
Chemical Properties Physical Properties Etc.
Describe the role of energy in chemical reactions?
Chemical reactions that release energy often occur spontaneously. Chemical reactions that absorb energy will not occur without energy.
What is the process by which a chemical change and a new substance is formed with new properties?
These are chemical reactions.
What comes out of chemical reactions?
4 useful chemical reactions are: fermentation, smelting combustion and electrolysis
Why is energy necessary to chemical reactions and describe some common sources of energy.?
Explain why energy is necessary to chemical reactions, and describe some common sources of energy.
Why energy is necessary to chemical reactions and describe some common sources of energy.?
Explain why energy is necessary to chemical reactions, and describe some common sources of energy.
