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In an atom, there are several energy levels. However, within each energy level there are subshells. The first row of the Periodic Table (PT) has one energy level. The second row has two energy levels, and the second row has two subshells. The third row of the PT has three energy levels; the third energy level has three subshells. The outer subshell is called the valence shell, and it holds valence electrons.
The first energy level can hold a maximum of two valence electrons. The second valence shell can hold 8 valence electrons. The third valence shell can hold 18. Past four the numbers get big, so we will not go there. The number of electrons that fill the valence shells determines reactivity. The Alkali Metals (first column) only need to give away 1 valence electron. The Halogens (second-to-last column) only need one to fill their outer shells. Put a Halogen and an Alkali Metal together and they will violently react in order to fill their valence shells. Atoms, in a reaction, are sharing electrons with other atoms.
What else can I help you with?
What are the new substances formed in a chemical reaction called?
The substance that is created is called a product.
Are all atoms present at the start of a reaction are present at the end?
The types and numbers of atoms at the end of a reaction are the same as before the reaction.
What is the effect of cutting one single strip of magnesium into more than one when doing a chemical reaction?
Cutting a single strip of magnesium into more than one piece increases the surface area available for the reaction to occur. This increased surface area leads to a faster reaction rate because more magnesium atoms are exposed to the reactants, resulting in a more rapid production of products.
How do you complete nh3 plus o2 plus h2o equals Hno3?
NH3 + O2 + H20 = HNO3 + 2H2 Basically, on the left you have 1 N, 3 O and 5 H atoms. On the right, you have 1 H, 1 N and 3 O atoms - leaving 4 H atoms doing nothing. Since a molecule of Hydrogen has 2 atoms, you need 2 atoms to balance the equation.
Are most chemical reactions at equilibrium in living cells?
No, most chemical reactions in living cells are not at equilibrium. Cells maintain a dynamic balance, constantly adjusting reaction rates to respond to changing conditions and maintain homeostasis. Equilibrium is rare in living systems due to the constant flux of molecules and energy.
Can the production of new atoms occur doing a chemical reaction?
No, it is not possible; we need nuclear reactions for this.
What are the new substances formed in a chemical reaction called?
The substance that is created is called a product.
Is Chlorine atoms stealing oxygen atoms from the ozone layer a physical or chemical change?
Chlorine is doing it chemically. It reacts with it.
Are all atoms present at the start of a reaction are present at the end?
The types and numbers of atoms at the end of a reaction are the same as before the reaction.
What is the chemical reaction between sodium acetate and sodium hydroxide?
When sodium acetate reacts with sodium hydroxide, a double displacement reaction occurs. The products of the reaction are sodium hydroxide and sodium acetate. The balanced chemical equation for this reaction is: CH3COONa + NaOH → CH3COONa + NaOH
When a nail is bent when hammered is it a chemical or physical reaction?
It is a physical reaction, this is because the nail is physically doing something
How many elements are there in bill nye the science guy chemical reactions?
It depends on which reaction he is doing - be more specific
What is the relationship between a Chemical reaction and a chemical equation?
The chemical equation demonstrates the ratio of chemicals reacting and producing. Even though only minute amount of actual chemicals are reacting, the chemical equation shows which chemicals are doing what.
How is chemical energy stored and released?
Chemical energy is held in the bonds between the atoms of molecules and is released when these bonds are broken, as in burning. Such a reaction usually starts by applying heat to activate the burning process. As the chemical burns, bonds break, and energy escapes as heat and light.
How the sun helps the stars to glow?
It doesn't. The nuclear/chemical reaction that powers the other stars is entirely independent of what our sun is doing.
What organic chemical reaction will make an alkane like ethane to become a double bonded 2 carbon chain?
You are trying to reduce ethane to ethene, I am guessing. That is a very hard reaction to do... probably you will have to do a free radical halogenation on ethane to form 1-chloroethane, followed by an E2 reaction with t-butoxide or some other bulky base to form ethene. Since ethane and ethene are both gases and cheaply available from petroleum cracking, this reaction really isn't worth doing.
When do the atoms of one element break down to form atoms of another element?
Atoms of one element break down to form atoms of another element through the process of nuclear fusion, which occurs in the core of stars during stellar nucleosynthesis. This process involves the combination of atomic nuclei to form heavier elements, releasing energy in the form of light and heat.
