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HEAT, Heat is the the number one indication of a reaction. Also, changes of state of matter and mass are also indicators of a chemical reaction. an example is when an iron fence rusts.
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Are two substances that burst into flames on contact an indication of a chemical reaction?
Yes, it is a chemical reaction.
The arrow in a chemical reaction is?
The arrow is an indication for the sense of reaction.
What is a common indication that energy has been asorbed of released in a chemical reaction?
Change in Temperature
An indication that energy is given off in a chemical reaction is shown by an?
An indication that energy is given off in a chemical reaction is shown by an increase in temperature. This is because the released energy can manifest as heat, causing the surroundings to become warmer.
What is the indication that chemical reaction occurs between sodium hydroxide and acetic acid?
A change in the pH.
Is flavor change a chemical reaction?
Flavor change can be a result of a chemical reaction. When certain molecules in food or drink interact with each other or with the taste receptors on our tongue, it can alter the flavor. This can involve chemical reactions, such as the breakdown or formation of new compounds.
What does the arrow ina chemical reaction mean?
In a chemical reaction, the arrow typically indicates the direction in which the reaction is proceeding. It shows the transformation of reactants into products. The arrow points from the reactants to the products in a chemical equation.
List two observations from the vinegar lab that imdicates a chemical reaction took place?
Bubbles
What is an indicator of a chemical reaction?
A visible change in color, formation of a precipitate, evolution of gas, or change in temperature are indicators of a chemical reaction. These changes typically signify that the chemical composition of the substances involved in the reaction has been altered.
List three signs that could make you think a chemical reaction might be taking place?
Formation of bubbles or gas: Gas evolution can indicate a chemical reaction is occurring. Change in color: A sudden change in color could be a sign of a reaction, such as a shift from clear to cloudy. Temperature change: If the reaction generates heat (exothermic) or absorbs heat (endothermic), it can be an indication that a chemical reaction is taking place.
What does arrow up mean in chemistry?
In chemistry, an upward arrow typically indicates the direction of a reaction or process going from reactants to products. It is used to show the progression of a chemical reaction.
What is the evidence that a chemical reaction took place when zinc mixed with HCl?
Evidence that a chemical reaction took place when zinc mixed with HCl includes the production of hydrogen gas bubbles, formation of zinc chloride as a product, and an increase in temperature of the reaction mixture due to the exothermic nature of the reaction. Additionally, the disappearance of the solid zinc as it undergoes dissolution is another indication that a chemical reaction has occurred.
