Which of the following statements are true? The activation energy (Ea) must be overcome in order for a reaction to occur.

Decreasing the temperature of the system increases the surface area.

Increasing the concentration of reactants decreases the amount of products.

The higher temperature you have the less kinetic energy there is.

In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. the solution was heated by burning natural gas in a bunsen burner to distill the ethanol that formed in the flask. during the distillation, the ethanol evaporated and then condensed in the receiving flask. the flame of the burner was kept too close to the bottom of the flask and some of the glucose decomposed into a black carbon deposit on the inside of the flask. during this experiment the following changes occurred. which of these changes involved a physical change and not a chemical change? check all that apply. 1-condensation of ethanol 2-evaporation of ethanol 3- formation of carbon dioxide gas from glucose burning of natural gas 4-formation of ethanol from glucose by yeast 5-formation of a carbon deposit inside the flask

Is this a single replacement reaction or there is no

The rules of engagement (roe) working group is often used to (select all that apply.)