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When a substance changes from one physical form to another you say the substance had had an?
Chemical reaction
What type of reaction has occurred when two or more substance combine to form another substance?
This is called synthesis, a combination chemical reaction that changes the chemical bonds in the substances.
The only sure evidence for a chemical reaction?
If the item changes form and substance chemically.
What is the substance present at the start of a reaction?
The substance present at the start of a chemical reaction is called a reactant. Reactants are the starting materials that undergo chemical changes to form products during a reaction.
When a substance changes to form a new substance with new properties it undergoes a what change.?
New substances are formed when matter undergoes a chemical reaction.
Substance changes to form a new substance with?
Substance changes to form a new substance through a chemical reaction. This involves the breaking and forming of chemical bonds between atoms, resulting in the creation of new molecules with different properties than the original substances.
What type of reaction has occured when two or more substances combine to form another substance?
This is called synthesis, a combination chemical reaction that changes the chemical bonds in the substances.
It reacts with hydrogen to form a gas. Is it a chemical or physical property of sulfur?
It is a chemical property of sulfur because it involves a reaction with another substance to form a new compound. Chemical properties describe how a substance can undergo chemical changes to form new substances.
In which process does a substance form?
chemical reaction
What type of property of a pure substance describes how that substance might from a new substance?
Chemical property describes how a substance can undergo a chemical reaction to form a new substance. This property is intrinsic to the substance and typically involves changes in molecular composition or structure.
What is it called when one or more substances change into one or more new substances?
This could refer to a chemical transformation (chemical change), a chemical reaction, or spontaneous change. Some changes require another substance or substances to be mixed together. Some reactions will occur by themselves without any outside manipulation or stimulation.
Is rusting a chemical or physical property?
Rusting is a chemical property because it is irreversible. It changes the identity of the substance.
