Atoms of the same element with the same atomic numbers and number of protons but different numbers therefore different mass numbers
6 of 9
what are periods and groups in the periodic table?
periods- horizontal lines in order of atomic numbers groups- vertical lines
7 of 9
Why does a presence of a catalyst speed up reactions?
A catalyst provides an alternative pathway for particles with a lower activation energy. Therefore in the presence of a catalyst a greater proportion of particles collide with more than the activation energy.
8 of 9
Why does increasing temperature speed up a reaction?
As temp. inreases, particles gain more energy. Therefore they move faster and make more frequent collisions. Also, as the particles have more energy a greater proportion will collide with more than the activation energy, sucessfu;, result in reactio
Comments
No comments have yet been made