Answer:
Atom
Explanation:
The smallest unit which maintains an element's properties is an atom.
Hydrocarbons
Hope this helps :)
Answer:
they must have same atomic number and different atomic mass
Answer: (C) Although the average kinetic energy of the colliding substances increases, this has no influence on activation energy.
Explanation:
After increasing the temperature of the reaction , the rate of the chemical reaction increases due to increase in the average kinetic energy of the particles. At increased temperature high proportions of particles can react making the reaction faster.
