A growing child eats food. once the food has been consumed, a series of will take place that energy needed to perform life processes

a. allergic reactions; produce
b. chemical reactions; release
c. nuclear reactions; store
d. physical reactions; remove

Which of the following is a compound? a. carbon b. oxygen c. hydrogen d. water

Avariable that is not being directly tested during an experiment should be

How does a catalyst increase the speed of a reaction? a. the catalyst eliminates the activated complex stage, allowing products to form immediately. b. the catalyst lowers the energy level of the reactants, making it easier for them to react. c. the catalyst makes it easier for the activated complex to form, lowering the activation energy. d. the catalyst raises the energy level of the products, making the reaction finish sooner. reset next