Cold packs are designed to become very cold when activated. when the pack is activated, a chemical reaction occurs to make the temperature of the cold pack do you create. what must be true of this chemical reaction? a. reaction releases energy into it surroundings b. products and reactants have the same amount of energy c. i don’t have plus i don’t hate him i reactants. d. the reaction absorbs energy from at surroundings

What metric units would you use to measure the thickness of a key

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.

What is a difference between a mixture of elements and a mixture of compounds