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What are three changes that could occur in a chemical reaction?
Cteasdal08
1 : pure Elements like Sodium and Chlorine chemically combine to form Salt...NaCl a new substance.
2: .Combustion of a fuel to produce new substances ...CO2 + H2O.
3: Chemical reaction between a metal and an acid... Iron (Fe) + Hydrochloric acid produced Iron Chloride (FeCl2) and Hydrogen gas. (H2).
Fe(s) + 2HCl(aq) = FeCl2(s) + H2(g). (new substances).
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoYou can have
- change in colour
- emission of heat
- formation of a new substance (e.g. precipitation)
Wiki User
∙ 13y ago1. PH change
2. Produce a new substance
3. A change in colour
4. Produce heat
Wiki User
∙ 7y agoThree examples of chemical changes are oxidation, toxicity, corrosivity.
Wiki User
∙ 15y agorusting vinegar bakingsoda
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What changes the rate of a chemical reaction or allows a chemical reaction to occur?
Heat?
What changes occur when a chemical reaction?
Changing temperature, density and pressure occur when a chemical reaction.
Is anti- acid tablets in water a chemical reaction or physical change?
it is a chemical process due to changes in pH occur, which are held to chemical processes. :)
What are Two main kinds of changes that you can observe when chemical reaction occur?
a precipitate is a solid that forms during a chemical reactions
How does the evolution of gas occur in a chemical reaction give an example?
This is a sign of a chemical reaction.
What comes out of a reaction?
Chemical changes occur after a chemical reaction.
What changes the rate of a chemical reaction or allows a chemical reaction to occur?
Heat?
What changes occur when a chemical reaction?
Changing temperature, density and pressure occur when a chemical reaction.
What is it called when changes occur when bonds form between atoms?
A chemical reaction, a chemical change.
Is anti- acid tablets in water a chemical reaction or physical change?
it is a chemical process due to changes in pH occur, which are held to chemical processes. :)
What changes can you observe when cemical reactions occur?
It depends on the chemical reaction. For example when you burn something it is a chemical reaction, but that is way different than if you mix baking soda and vinegar which is also a chemical reaction. It changes the matter into a different chemical matter make up of that substance.
Describe the two types of energy changes that occur in a chemical reaction?
An exothermic reaction and the change between potential and kinetic.
What are Two main kinds of changes that you can observe when chemical reaction occur?
a precipitate is a solid that forms during a chemical reactions
In terms of chemical bond and electrons what kind of changes occur between atoms when substances undergo chemical reaction?
hi
Is a tire losing air a chemical reaction?
no. no chemical changes occur. air just moves from the inside of a tire to the atmosphere
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.
When paper changes from yellow to brown in sunlight what type of change occurred?
A chemical change. Color change is a good indicator of a chemical change.
