Select all the correct answers. A pot of water is heated over a fire, and then frozen peas are added to the hot water. What happens to the energy in this situation?
The energy gained by the peas is lost by the water.

The peas lose energy as they are heated in the water.
Energy is transferred from the peas to the water and the pot.
The water receives energy both from the fire and from the frozen peas.
Energy is transferred from the fire to the pot, then to the water, and then to the peas.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.

rosa was looking for patterns to predict the products of chemical reactions. she recorded three similar decomposition reactions in the table.she should record 2licl + 3o2.

in the last row of the table. it is the thermal decomposition of chlorate lithium, hence, she should record these products as: lithium chloride ( 2licl ) and oxygen ( 3o2 )   2 > 2 licl + 3o2.