<span>
An Endothermic Reaction occurs when the energy used to break the bonds in the reactants is greater than the energy given out when bonds are formed in the products
An Exothermic reaction is one that releases energy in the form of heat or light.
</span>Exothermic Reactions: Rust and Setting of Cement
Endothermic Reactions: Photosynthesis and evaporation.
One example of an endothermic reaction is Ice packs. The packs that deliver instant cooling when a seal inside is broken. It works by having water and ammonium nitrate in separate compartments and then when you break the seal between them they mix. The reaction is endothermic so it takes in heat from the surroundings so the pack become cold.
I hoped this helped you!
yes because they are inert or inactive at normal temperature, they are inactive because their outer most orbit contain either 2 or 8 electrons.that make them stable
Answer:
Two unlike charged ions.
Explanation:
The positive charge on one and the negative on the other helps form the ionic bond.
Ionic bonding is the complete transfer of valence electron(s) between atoms. In these types of bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion..
Ionic bonding is observed because metals have few electrons in their outer-most orbitals. By losing those electrons, these metals can achieve noble gas configuration and satisfy the octet rule.
The answer is D. Most common semiconducting materials are crystalline solids. A<span>morphous and liquid semiconductors are also known to be.</span>
Oxygen is the most reactive element listed here
It is the highest and most to the right of these elements listed
