does impurty affect substances more malleable or increases tensile strength?
Impurities in a material can affect both its malleability and tensile strength, but in different ways.
If a material has impurities that weaken the chemical bonds between its atoms, it will be less malleable because it will be more susceptible to cracking or breaking when subjected to external forces. This is because the weakened bonds can't withstand deformation as easily.
On the other hand, if a material has impurities that strengthen the chemical bonds between its atoms, it will typically have higher tensile strength. This is because the stronger bonds can resist being stretched or pulled apart before breaking.
So, the effect of impurities on a material will depend on the type and concentration of the impurities, as well as the specific properties of the material.