To see far away? I'm thinking that like human glasses, lighthouses need lenses to see the far away boats. Or humans.
It is called electron affinity. It increase as you go to the right of the periodic table.
Answer:
The anions that can act as bases (conjugate bases of weak acids) have the capability to hydrolyse water and produce OH− ions. Cl−, Br−NO−3, SO2−4 are all conjugate bases of strong acids that don't have the capability to hydrolyse water and so they aren't basic.
Explanation:
<span>D. a bond in which electrons are transferred
</span>Ionic bonding<span> is the complete transfer of valence electron(s) between atoms</span>
Answer:
Physical change
Explanation:
Chemical change is defined as the process in which new substance with different properties is formed from old substance and the process is irreversible while physical change is a reversible process and changes only physical properties of a substance.
<em>The given experiment is an example of physical change because it is just the physical act of dissolving. The metal disk is dissolving in sodium acetate and the process is exothermic and the process is reversible as well.</em>
Hence, the correct answer is "physical change".
