Question

Please help me, I'm confused..

What are the four variables that can affect reaction rate? (1 pt)
- temperature
- size
- concentration
- pressure

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Using what you’ve learned about collision theory, choose one of the variables you listed above and explain what is happening at the molecular level.

(I chose 'size', but what does the molecular level part mean? I don't know what that is!)

Answer 1

Molecular level means "at the size of atoms and molecules" rather than "as we see the reaction in our daily lives". In other words the problem wants an explanation in terms of atoms and molecules and not in terms lumps or cups or pieces of a board. Here is a site I found on the web that explains all of these factors that affect the rate of a reaction. It's a lot of reading and it may be more than you want but it wraps up the whole concept of reaction rates and why each one of the variables works as it does. Size refers to surface area which is the part you have asked about but temperature, concentration, etc are discussed very well also.
h ttps://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Map%3A_Introductory_Chemistry_(Tro)/15%3A_Chemical_Equilibrium/15.02%3A_The_Rate_of_a_Chemical_Reaction
Remember to close the space between h and ttps........
I can't post the url if I don't put the space there. Good luck.

Answer 2

THANK YOU SO MUCH!

Answer 3

what did u get for the other answers?