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Some bonds between atoms are broken and new bonds are formed.
No, this is a physical reaction because no matter has exchanged etc. Instead, the lattice structure of the glass has been broken- which is simply physical. (Not even that sophisticated a physical change, as glass has no lattice structure.)
When a compound is broken down by the reaction with water, this is termed hydrolysis.
Its a decomposition reaction
no
No, it is not a chemical reaction. The added heat only drives the water molecules out of the crystal structure. No bonds are made or broken. Actually, it is a chemical change, because there are bonds between the water and CuSO4. by heating, these bonds are broken, there is a color change not coming from the reactant.
Some bonds between atoms are broken and new bonds are formed.
To denature the protein. Pepsin can work pnly if the secondary structure of the protein is broken up.
Yes. No bonds broken, no reaction.
No, this is a physical reaction because no matter has exchanged etc. Instead, the lattice structure of the glass has been broken- which is simply physical. (Not even that sophisticated a physical change, as glass has no lattice structure.)
The reaction is:CaCO3 + CO2 + H2O = Ca(HCO3)2
chemical bond
When a compound is broken down by the reaction with water, this is termed hydrolysis.
C4H16BR4. Limonene adds 4Br and the two double bond is broken.
This is a chemical decomposition reaction.
Decomposition reaction
An exothermic reaction is a reaction that happens when energy is release. This means that a bond is being broken. Because the bond is broken, it has undergone an exothermic reaction.