A reaction in which energy is absorbedfrom the surroundings is called an endothermic reaction. In endothermicreactions the enthalpy of the products is greater than the enthalpy of the reactants. Because reactions releaseor absorb energy, they affect the temperature of their surroundings. If reactant molecules in a particular reaction have more energy than the product molecules, then energy is released to the surroundings in the form of heat and light. And when this happens, the reaction is usually called an exothermic reaction.
On the other hand, if the product molecules have more energy than the reactants, then the reaction absorbs energy from the surroundings. And when this happens, the reaction is usually called an endothermic reaction.
Answer:
Pure substances are defined as substances that are made of only one type of atom or molecule. The purity of a substance is the measure of the extent to which a given substance is pure.
Answer: high and low
Explanation: high and low
Answer:
Plant cells are arranged in tight squares due to their cell walls and are filled with water. These characteristics give the plant a structural support.
