An increase in temperature of ten degrees celsius will have what effect on the rate?

An increase in temperature will increase the reaction rate because of a large increase in the number of high energy collisions which results in doubling the rate of reaction.

Explanation:

The rate of reaction increases by increasing the temperature. The reaction rate is doubled at room temperature for every 10°C. As the temperature increases, the degrees will also change gradually. By increasing the collision frequency, we can increase the rate of reaction. Collision takes place only when the particles react. The particles will move faster when you heat the substance and collide. This will helps to speed the rate of reaction.

Yes, endothermic means it turns cold. and some chemical changes include change of tempature.