0
Reactants are the starting substances that undergo a chemical change, yielding products after the reaction. The arrow indicates the direction of the reaction from reactants to products.Coefficients are used to balance the equation - they represent the number of molecules or moles of each substance involved. Subscripts give the number of atoms of each element in a molecule.
Add your answer:
Earn +20 pts
What is the diffrencence between exothermic reaction and chemical reaction?
A chemical reaction is a process that involves the breaking and forming of chemical bonds to create new substances. An exothermic reaction is a type of chemical reaction that releases heat energy to the surroundings. In other words, all exothermic reactions are chemical reactions, but not all chemical reactions are exothermic.
What is the chemical equation for the reactions when copper is added to aluminum sulfate?
The chemical equation for the reaction when copper is added to aluminum sulfate is: 3Cu + 2Al2(SO4)3 -> 3CuSO4 + 2Al
What do you need in order to have a chemical reaction?
cell membrane
How does law of the conservation of mass apply to chemical reactions?
The Law of Conservation of Mass applies to chemical changes. When considering a chemical change this would mean that the total mass of all of the reactants in the chemical reaction is equal to the total mass of products in the chemical reaction.
What happens during every chemical reaction?
During every chemical reaction, chemical bonds between atoms are broken and new bonds are formed to create new substances. The total number of atoms of each element remains the same before and after the reaction, following the law of conservation of mass. Energy may also be absorbed or released during the reaction.
Is a molecule a substance that a chemical reaction can't break down?
Yes, a molecule is the smallest unit of a substance that retains all of the chemical properties of that substance. In a chemical reaction, molecules may rearrange or combine with other molecules, but they themselves are not broken down into smaller parts.
Is water a chemical reaction or a physical reaction?
Water is not a reaction at all. If you mean to ask if a state change in water is chemical or physical, it is physical.
What undergoes no chemical change during a chemical reaction?
A catalyst undergoes no chemical change during a chemical reaction.
What is the diffrencence between exothermic reaction and chemical reaction?
A chemical reaction is a process that involves the breaking and forming of chemical bonds to create new substances. An exothermic reaction is a type of chemical reaction that releases heat energy to the surroundings. In other words, all exothermic reactions are chemical reactions, but not all chemical reactions are exothermic.
Is mass a physical or chemical reaction?
Mass is not a reaction at all; it is a physical property.
Is oxidation of food in the body chemical change?
All oxidation is a chemical reaction.
What is the most important chemical reaction of all?
Photosynthesis
Why is chemical energy needed in all chemical reactions?
To initiate a chemical reaction an activation energy is necessary.
How can chemical reaction effect the world?
Generally all in the world is the effect of chemical reactions.
Should heat be added for a chemical reaction to take place?
If the reaction is endothermic in nature then heat should be added to it,otherwise all chemical reaction neddn't heat always.
Do all chemical reactions need atomic nuclei?
All atoms involved in a chemical reaction have an atomic nucleus.
Is vapour a chemical reaction?
Vapor is not a chemical reaction itself. It is the gaseous state of a substance that was previously in liquid or solid form. The process of creating vapor from a liquid or solid can involve a physical change (such as evaporation) rather than a chemical reaction.
