Thank You so much for the video For the reaction, 1. Higher temperature will increase the rate of reaction and lower temperature will decrease the rate of reaction 2. Like, if the Mg is a ribbon. Cutting the ribbon in pieces will increase the rate of reaction a little. have Mg in sphere shapes gives the best speed of reaction as increased surface area 3. I don't think pressure will affect the rate of reaction because the reactants are not gas ( Please corrent if wrong) 4. Higher concentration of HCl will increase the Rate of reaction and vise versa 5. Adding a suitable catalyst will increase rate of reaction . (Can you give me an example of a suitable catalyst)