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- Changes in color: If the color of the reactants or products changes during the reaction, it is a sign that a chemical reaction has occurred.
- Formation of a gas: Production of gas bubbles or fizzing indicates a chemical reaction, such as in the reaction between an acid and a carbonate.
- Changes in temperature: If the reaction absorbs or releases heat, causing a change in temperature in the surroundings, it signals a chemical reaction has taken place.
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What three ways would let you know that a reaction of a metal had taken place?
Observation of a change in the appearance of the metal, such as discoloration or formation of a patina. Production of bubbles or gas, indicating a chemical reaction is occurring. Increase in temperature or release of heat during the reaction.
What evidence would one observe to indicate that a double displacement reaction has occurred?
Evidence of a double displacement reaction includes the formation of a precipitate (solid) when two solutions are mixed, a color change, or the formation of a gas or a distinct odor. Observing any of these changes typically indicates that a chemical reaction has taken place.
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.
What meteor shower took place in 1998?
The Leonid meteor shower took place in November 1998. This annual meteor shower is known for producing a high rate of meteors, with some years reaching meteor storms of hundreds or thousands of meteors per hour.
Is HCl(aq) C2H4(aq)C2H5Cl(aq) considered a reaction mechanism?
No. This is a reaction, but not a reaction mechanism. The mechanism would should the individual steps or alterations that take place with the HCl dissociating, and the electrons moving from one place to another, etc.
What evidence that a chemical reaction has taken place would a living thing show?
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What three ways would let you know that a reaction of a metal had taken place?
Observation of a change in the appearance of the metal, such as discoloration or formation of a patina. Production of bubbles or gas, indicating a chemical reaction is occurring. Increase in temperature or release of heat during the reaction.
What reaction will you be taking out if your metal is copper?
what reaction would be taken out if you had copper as your metal
How can you tell if a chemical reaction has taken place when a hot air balloon flies?
When a hot air balloon flies, the chemical reaction that occurs is the heating of the air inside the balloon, causing it to expand and become less dense than the surrounding air. This creates lift, allowing the balloon to rise. You can confirm that a chemical reaction has taken place by observing the change in volume and buoyancy of the air inside the balloon as it heats up.
What indicators definitely show that a chemical reaction has taken place?
Some indicators that show a chemical reaction has taken place include the formation of a gas, a color change, the production of heat or light, or the formation of a precipitate (a solid formed from two liquids mixing together).
What is the opposite of reactants?
The opposite of reactants would be products. Reactants are the substances that are present before a chemical reaction occurs, while products are the substances that are formed as a result of the reaction.
Would the reaction take place if the reagent were omitted?
It is impossible a reaction without reactants.
Where would cutpurses be taken place in William Shakespeare's time?
they would be taken to a dungeon and beheaded or tortured
How would you speed up a reaction without a catalyst?
heat the vessel the reaction is taking place!
What evidence would one observe to indicate that a double displacement reaction has occurred?
Evidence of a double displacement reaction includes the formation of a precipitate (solid) when two solutions are mixed, a color change, or the formation of a gas or a distinct odor. Observing any of these changes typically indicates that a chemical reaction has taken place.
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.
What does cuso4 plus CO2 plus H2O mean?
It means that a chemical reaction has taken place, and copper sulfate, carbon dioxide, and water have combined somehow. Then there would be an "equal" sign, and on the other side of the chemical equation would be another bunch of symbols for compounds, showing what chemicals came out of the reaction.
