Alloys are harder and stronger than pure metals. I saw this sentence,
"Alloys make the metal harder by preventing the layers of atoms from sliding."
I think it is more correct to add the word "easily" at the end of the sentence since in an alloy, it is more difficult for the layers of atoms to slide over each other.
What do you think?
I think your sentence makes more sense than the original. I wonder a little about the use of the term harder. Does alloying always make the material harder?
Thanks for been requested
I understand your point. The addition of the word "easily" at the end of the sentence can indeed help to clarify the fact that alloys make it more difficult for the layers of atoms to slide over each other compared to pure metals.
To explain why alloys are harder and stronger than pure metals, it is important to understand the structure of metals and how alloys affect it. In pure metals, the atoms are arranged in a regular pattern called a crystal lattice. The layers of atoms in this lattice can slide easily past each other, allowing for deformation and making the metal relatively soft.
However, when other elements are added to create an alloy, they disrupt the regular pattern of atoms. These additional atoms can have different sizes, shapes, and electrical charges, which make it harder for the layers of atoms to slide easily. This interference in the lattice structure prevents dislocations (sliding of layers of atoms) and increases the strength and hardness of the alloy.
By altering the arrangement of atoms, alloys effectively impede the movement of dislocations, making it more challenging for the layers to slide over each other. The more obstacles there are for dislocations to move, the harder and stronger the alloy becomes.
So, to answer your question, yes, adding the word "easily" at the end of the sentence can provide a more accurate description of how alloys make it more difficult for the layers of atoms to slide over each other, thus contributing to their increased hardness and strength.