0
Chemical changes occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. Some reactions produce heat and are called exothermicreactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. Understanding chemical changes is a major part of the science ofchemistry.
When chemical reactions occur, the atoms are rearranged and the reaction is accompanied by an energy change as new products are generated. An example of a chemical change is the reaction between sodium and water to produce sodium hydroxide and hydrogen. So much energy is released that the hydrogen gas released spontaneously burns in the air.
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoResults in a new substance
Add your answer:
Earn +20 pts
When oxygen is liquefied is it a physical or chemical change?
Physical because it is still Oxygen. A chemical change results in a chemical equation and thus a new substance. No new substance = no chemical change. Liquefaction is a physical property.
What is the ability of matter to change into a completely new substance with new properties called?
A chemical reaction results in new substances with new properties. So perhaps reactive is the term or chemically reactive.
What is an ability of a material to change its chemical makeup?
Chemical property
A change in which one or more substances combine or break apart to form new substances?
chemical change
Is a decaying compost pile an example of physical change?
No, a decaying compost pile is not an example of a physical change. The process of composting results in a different physical appearance or state -- which is physical change -- but it is not reversible and necessitates a change in structure -- which is chemical change.
What does a change in a chemical properties of a substance result in?
A chemical reaction (change) results in a change in chemical properties.
Differences between chemical and physical change?
A chemical change results in a change in chemical composition, while a physical change does not.
What are the net results of a chemical change?
change in the chemical aspect or the molecular property.
What is a description of chemical changes?
Chemical change is any change that results in the formation of new chemical substances.
Results in chemical change?
You think probable to the products of a chemical reaction.
When copper sulfate mixed with sodium hydroxide is a form of physical change or chemical change?
Chemical change (which results in physical change).
Is baking soda reacts to vinger a physical or chemical change?
Chemical change because the results are different molecules.
What type of change results in type of matter changing into another?
chemical change
A change in matter that results in new matter with new properties?
Chemical change
Is changing color of apple a chemical or physical change?
An apple turning brown is a CHEMICAL change.
What does product mean science?
a substance that results from a chemical change
What results after a chemical change?
A chemical change produces a form of matter that was not there before. Evidence of a chemical change could be changes in temperature, color, smell, and the production of a gas or a precipitate.
