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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.
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How we know a chemical change has occurred when burning a candle?
Burning is a chemical reaction, an oxydation.
How can you know this is a chemical reaction?
Evidence of a chemical reaction include the following: formation of a precipitate formation of a gas change in temperature change in color
Is chemical reaction alive?
No. A chemical reaction is not alive.
Why do you have to balance chemical equations?
Balancing chemical equations is important to maintain the law of conservation of mass, which states that matter cannot be created or destroyed in a chemical reaction. Balancing ensures that the number of atoms of each element is the same on both sides of the equation, representing a complete and accurate description of the reaction.
How can the efficiency of a chemical reaction be expressed?
A chemical reaction is represented by a chemical equation.
What are the five ways to know that chemical reaction happened?
don't know
How we know a chemical change has occurred when burning a candle?
Burning is a chemical reaction, an oxydation.
A change in matter that produces new substances is called?
Chemical change. References: Intro to Matter book.
How can you know this is a chemical reaction?
Evidence of a chemical reaction include the following: formation of a precipitate formation of a gas change in temperature change in color
What is the correct balanced chemical equation for this reaction?
To provide the balanced chemical equation, I would need to know the specific reaction you are referring to. Can you please provide the reactants and products involved in the reaction?
Does energy change in a chemical reaction?
yes it does i didnt know that at first but it does
An amtom undergoes a reaction ant attains a more stable from how do you know is it was chemical or nuclear reaction?
If an atom undergoes a chemical reaction, it involves rearrangement of electrons in the outer shell to form new chemical bonds. On the other hand, if it undergoes a nuclear reaction, it involves changes in the atomic nuclei, resulting in the formation of different elements or isotopes. To determine whether it was a chemical or nuclear reaction, observe whether there are changes in the electron configuration or in the atomic number and mass of the atom.
Is picking up iron filings with a magnet a chemical reaction?
No, picking up iron filings with a magnet is not a chemical reaction. It is a physical change where the iron filings are being attracted and moved by the magnetic force of the magnet.
What is a chemical change also referred to as?
Chemical reaction
Is chemical reaction alive?
No. A chemical reaction is not alive.
How does an engine have a chemical reaction?
Combustion is a chemical reaction.
When hydrochloric acid is mixed with calcium is that a chemical or a physical reaction?
The reaction between hydrochloric acid and calcium is a chemical reaction because new substances are formed. In this reaction, calcium displaces hydrogen from hydrochloric acid to produce calcium chloride and hydrogen gas. This process involves a rearrangement of atoms and the formation of different chemical bonds.
