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Some 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
What else can I help you with?
What might you see if a chemical reaction takes place?
1.Precipitate 2.Smoke 3.Change in color
Where can you see a chemical reaction take place in a hot air balloon?
A chemical reaction takes place inside hot air balloons whenever they are flying. Specifically, the propane tanks used to heat the air inside the balloon create a combustion reaction.
What chemical is being tested if a compound is added to a solution of hydrochloric acid and the solution is observed to see if a reaction takes place?
reactivity
What is the chemical reaction that takes place when oxygen combines with a combustible at a suitably high temperature?
The reaction is usually considered an oxidation-reduction reaction, and that's what we see in combustion, or fire. In a fire, fuel is combusted, and the fuel is oxidized in the process.
Isdissolving sugar in a cup of tea physical change or chemical reaction?
its as physical change as no reaction takes place. the sugar fills in the gaps between the water molecules so you cant see it un till you filter or dissolve the coffee.
Give three things you might see if a chemical reaction takes place?
There are many observations that may occur when a chemical reaction takes place. Some of the things are:- Change of colour, change of temperature change of state. These can be observed by the features below There might be a change in colour when mixing the reactants; the vessel in which the reaction is taking place might get warm on the outside or cold depending on the type of reaction. There may be effervescence or fizzing with gas production; a precipitate may form.
What will you observe when a pinch of baking soda is added to an aqueous solution of ethanoic acid. write the chemical reaction that takes place?
i just learnes about this today! it makes and endothermic reaction because energy and heat is being released! also, you could see the reaction! hope it helps:0 Btw~ an exothermic reaction is the complete opposite, you can see it and it gets hotter!
Why do some things fizz when you put it in water?
When an effervescent reaction occurs, such as with Alka-Seltzer tablets or soda pop, it's due to a chemical reaction between the substance and water that releases carbon dioxide gas. The fizz you see is the gas escaping from the liquid.
Why do fireflies come out at dusk?
The characteristic green yellow glow produced by a firefly is the result of a chemical reaction that takes place in the insect's abdomen. This chemical reaction involves three ingredients luciferin (a heat resistant substrate and serves as the source of the light) luciferase (an enzyme that triggers the light producing chemical reaction) and oxygen (provides the fuel for the reaction to proceed).
What is the difference of physical and chemical reaction?
a physical reaction you can see and a chemical is the molecules changing inside the object
Maria and Miquel were enjoying the fireworks when they got into a chemistry argument. Maria insisted that the fireworks were the result of a chemical reaction. Miguel disagreed. What would you tell th?
I would tell them that fireworks are indeed the result of a chemical reaction. The colors in fireworks are produced by different metal salts that emit light when heated during combustion, creating the colorful displays we see in the night sky.
How do you know when a chemical reaction happend?
You can tell a chemical reaction has occurred if there is a change in color, formation of a gas or solid precipitate, evolution of heat or light, or a change in odor. Additionally, changes in the chemical composition, such as the breaking or forming of bonds between atoms, indicate a chemical reaction has taken place.
