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Some indicators of a chemical reaction are:
- formation of new compounds - change of color
- change of odor
- release of a gas
- change of the temperature (absorption or release)
- change of the viscosity
- formation of a precipitate
- change of general appearance
- possible explosion - sometimes a sound is produced - possible chemiluminescence
What else can I help you with?
Do chemical reactions need gravity?
No, chemical reactions do not require gravity to occur. Chemical reactions involve the rearrangement of atoms and molecules, which can happen in the absence of gravity. Gravity may influence the rate or behavior of certain reactions on Earth, but it is not necessary for the reactions themselves.
Does chemical reactions need water?
Not all chemical reactions require water. While many reactions may occur in the presence of water, there are also reactions that take place in other solvents or under dry conditions. The presence of water can often act as a catalyst or a medium for facilitating certain reactions, but it is not a universal requirement for all chemical reactions.
When chemical reactions occur are atoms never ionized rearranged destroyed or vaporized?
Atoms can be ionized in chemical reactions when they gain or lose electrons. In some reactions, atoms may rearrange into different molecules or compounds. However, atoms are not destroyed or vaporized during chemical reactions; they are simply rearranged into different combinations.
Are there exceptions to the rule for chemical reactions?
Yes, there are exceptions to the general rules governing chemical reactions. For instance, certain reactions may not follow the expected stoichiometry due to side reactions or the formation of intermediates. Additionally, some reactions can occur under non-standard conditions, such as varying temperature and pressure, which can alter reaction pathways. Furthermore, specific catalysts can lead to unexpected reaction outcomes, deviating from typical behavior.
Is an engine moving a car chemical or physical?
The movement of a car engine is considered physical, as it involves the transformation of mechanical energy into motion. Chemical reactions may occur within the engine, such as combustion in the cylinders, but the overall process is primarily physical in nature.
Do chemical reactions need gravity?
No, chemical reactions do not require gravity to occur. Chemical reactions involve the rearrangement of atoms and molecules, which can happen in the absence of gravity. Gravity may influence the rate or behavior of certain reactions on Earth, but it is not necessary for the reactions themselves.
What happens when both chemicals are alkaline?
Displacement may occur, or if both are made up in water, displacement reactions may occur between the ions of water and each chemical may occur
Where in gizmo and in real life do chemical to thermal to electrical current occur?
In a gizmo, chemical to thermal to electrical current may occur in a battery where chemical reactions produce heat and electricity. In real life, this process can be seen in fuel cells, where chemical reactions between a fuel and oxidizer generate heat and electricity.
Does chemical reactions need water?
Not all chemical reactions require water. While many reactions may occur in the presence of water, there are also reactions that take place in other solvents or under dry conditions. The presence of water can often act as a catalyst or a medium for facilitating certain reactions, but it is not a universal requirement for all chemical reactions.
Is it true or false that all chemical reactions require an initial input of energy called catalysis?
False. Not all chemical reactions require catalysis. Some reactions occur spontaneously, while others may require an initial input of energy in the form of activation energy. Catalysis is a process that lowers the activation energy required for a reaction to occur, but it is not necessary for all reactions.
When chemical reactions occur are atoms never ionized rearranged destroyed or vaporized?
Atoms can be ionized in chemical reactions when they gain or lose electrons. In some reactions, atoms may rearrange into different molecules or compounds. However, atoms are not destroyed or vaporized during chemical reactions; they are simply rearranged into different combinations.
What results in a chemical change?
Chemical changes occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. Some reactions produce heat and are called exothermicreactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. Understanding chemical changes is a major part of the science ofchemistry. When chemical reactions occur, the atoms are rearranged and the reaction is accompanied by an energy change as new products are generated. An example of a chemical change is the reaction between sodium and water to produce sodium hydroxide and hydrogen. So much energy is released that the hydrogen gas released spontaneously burns in the air.
Where in amoeba do all the chemical reactions happen?
In an amoeba, all the chemical reactions occur in the cytoplasm. This gel-like substance fills the cell and contains various organelles, enzymes, and molecules necessary for metabolic processes. The cytoplasm facilitates the movement of nutrients and waste, allowing for efficient cellular function. Additionally, some reactions may occur in specialized organelles like mitochondria, but the majority take place in the cytoplasmic environment.
Are there exceptions to the rule for chemical reactions?
Yes, there are exceptions to the general rules governing chemical reactions. For instance, certain reactions may not follow the expected stoichiometry due to side reactions or the formation of intermediates. Additionally, some reactions can occur under non-standard conditions, such as varying temperature and pressure, which can alter reaction pathways. Furthermore, specific catalysts can lead to unexpected reaction outcomes, deviating from typical behavior.
What is an another name for exothermic and for endothermic reactions?
it is a Many chemical reactions release energy in the form of heat, light, or sound. These are exothermic reactions. Exothermic reactions may occur spontaneously and result in higher randomness or entropy (ΔS > 0) of the system. They are denoted by a negative heat flow (heat is lost to the surroundings) and decrease in enthalpy (ΔH < 0). In the lab, exothermic reactions produce heat or may even be explosive. There are other chemical reactions that must absorb energy in order to proceed. These are endothermic reactions. Endothermic reactions cannot occur spontaneously. Work must be done in order to get these reactions to occur. When endothermic reactions absorb energy, a temperature drop is measured during the reaction. Endothermic reactions are characterized by positive heat flow (into the reaction) and an increase in enthalpy (+ΔH).
Is an engine moving a car chemical or physical?
The movement of a car engine is considered physical, as it involves the transformation of mechanical energy into motion. Chemical reactions may occur within the engine, such as combustion in the cylinders, but the overall process is primarily physical in nature.
Is it true that most chemical reactions involve in one step?
No, it is not true that most chemical reactions occur in one step. Many chemical reactions are complex and can involve multiple steps, known as elementary reactions, as part of a reaction mechanism. These steps can include intermediates and transition states, and the overall reaction may involve several stages before reaching the final products. The number of steps depends on the specific reaction and the conditions under which it occurs.
