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Can someone explain why chemical reactions will either release or absorb energy?
Wiki User
∙ 15y ago
The Law of Conservation of Energy says that the total amount of energy in a system has to remain the same - usually expressed as "energy cannot be created or destroyed". In molecules, the bonds between the atoms have a lot of stored energy in them. In order to break a bond, you have to put in a little energy, but then the energy stored in those bonds is released and available to use. When you run a chemical reaction, you have two steps. First, you have to break the original bonds. This process is exothermic - it releases energy. Second, you have to make new bonds. This process is endothermic - it absorbs energy. What determines whether a reaction absorbs or releases energy is the balance between the two. Hydrogen gas and oxygen gas both contain a lot of energy, while water only contains a little bit of energy. Converting from hydrogen and oxygen to water is exothermic, while converting from water to hydrogen and oxygen is endothermic.
Wiki User
∙ 15y ago
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What are other caroler reactions to hamadi?
can someone please answer this questiong
Why you shouldn't mix chemicals in the science lab?
Unless you know what chemicals you are mixing, and what kinds of chemical reactions they are going to have, you don't know what will happen when you mix chemicals. There are some chemicals which, when mixed, will release a very deadly poisonous gas. There are other chemicals which, when mixed, will explode or burst into flames. Even aside from that, chemicals in a science lab are there for some reason. Someone obtained those chemicals for the lab and intends to do something with them. They are not there to play around with at random.
Why must all chemical reactions be balanced?
All chemical reactions must be balanced, because matter is neither created nor destroyed in these reactions. Even if the arrangement of the individual atoms is different, the number of atoms of each element remains constant. Note that chemical reactions differ from nuclear reactions.
What does it mean for a chemical to be toxic?
To be toxic means you are not good for someone like if I am a killer and you are one of my friends that would make you toxic to the police you would be seen as me. For a chemical to be toxic is that you probably should not touch and/or drink the chemical for it will damage you.
How could you prove to someone that the dissolving was a physical to change not a chemical change?
You could separate it all out.
Without enzymes the chemical reactions in the body would?
i have absolutly no idea what the answer is.... can someone help me?
Where is love in the heart or in the head?
Love is irrational, so in that sense it is in the heart. But the chemical reactions that cause you to be attracted to someone take place in the brain, so technically it's in the head.
What do you call someone who studies the composition and reactions of substances?
chemist
What are other caroler reactions to hamadi?
can someone please answer this questiong
Can someone tell you facts about chemical reactions please?
no because it's not really a fact your asking to be answered its just a question as if you were asking someone. ------------------------------------------------------------------------------------ A chemical reaction is the process allowing atoms to be assembled in more complex structures like molecules. In chemical reactions molecules also combine in more complex molecules or are divided in simpler once. In a chemical reaction atoms nuclei are not changed, all bonds that are formed or broken are caused by sharing of electrons among atoms (covalent bonds) by electromagnetic interaction between charged atoms (ion bonds) or by the so called weak forces like hydrogen bonds or van der Waals bonds. If the atoms nuclei are changed the reaction is not a chemical reaction, but a nuclear reaction. For example, the reaction creating salt (NaCl) from HCl and NaOH dissolved in water solution is a chemical reaction. A simple rule drives spontaneous chemical reactions like salt creation: the overall chemical system energy (called G) has to decrease, so that the final state has to be stable at an energy level lower than the initial state. In practice, non spontaneous reactions are also caused by injecting energy into the system and then dividing the components so that the system does not revert to the initial state when the energy feeding ends.
How would you explain something to someone you had never met?
The best way to explain something to someone you have never met is to break it down into pieces. You can look for common areas of interests and use them to explain the situation.
What is the chemical released when someone is lying?
The chemical released during lying is catecholamines
How do you tell your parents you like someone in 7th grade?
It's best to be honest and direct with your parents. Find a calm moment to sit down with them and explain your feelings, emphasizing how important it is to you. Be prepared for their reactions and remember that they just want what's best for you.
How do you explain an auto repossession?
Explain it in the sense of telling someone at their front door what you are doing or explain it in the sense of what causes it and is it legal and why can it be done?
Is a letter to someone to explain why its important to talk about aids and its protect against the disease?
Is A Letter To Someone To Explain Why Its Important To Talk About AIDS And Its Protect Against The Disease ?
What do you do if you are confused about something?
Ask someone who isn't confused about that something, someone patient who can explain it to you.
What does to put someone in the picture mean?
To explain what is going on, to aquaint someone with all the facts
