why do reactions occur? during a chemical reaction, the ____ form products when chemical ____ in the…

why do reactions occur? during a chemical reaction, the ____ form products when chemical ____ in the reactants break and form ____ in the products. • all reactions involve a ____ in energy. o when new bonds are formed, chemical energy is ____. o when bonds are broken, energy is ____, or required to separate atoms. • we feel a change in ____ when more bonds are being ____ than being formed or vice versa. types of reactions • endothermic reaction: a chemical ____ in which thermal energy is ____. the products will usually feel ____. o the products will have ____ than the reactants. o more chemical bonds are being ____ in the reactants than being ____ in the products. • examples: baking, ____, photosynthesis, ____ salt in water, ____ ice cubes.

why do reactions occur? during a chemical reaction, the ____ form products when chemical ____ in the reactants break and form ____ in the products. • all reactions involve a ____ in energy. o when new bonds are formed, chemical energy is ____. o when bonds are broken, energy is ____, or required to separate atoms. • we feel a change in ____ when more bonds are being ____ than being formed or vice versa. types of reactions • endothermic reaction: a chemical ____ in which thermal energy is ____. the products will usually feel ____. o the products will have ____ than the reactants. o more chemical bonds are being ____ in the reactants than being ____ in the products. • examples: baking, ____, photosynthesis, ____ salt in water, ____ ice cubes.

Answer

Brief Explanations:

In a chemical reaction, atoms in reactants rearrange as bonds break and new bonds form in products. Energy changes occur with bond - breaking (energy absorbed) and bond - forming (energy released). Endothermic reactions absorb thermal energy, making products feel cold, having more energy than reactants, and with more bonds broken in reactants than formed in products. Examples include baking, photosynthesis, salt dissolving in water, and ice - cube melting.

Answer:

During a chemical reaction, the atoms form products when chemical bonds in the reactants break and form new bonds in the products. All reactions involve a change in energy. When new bonds are formed, chemical energy is released. When bonds are broken, energy is absorbed, or required to separate atoms. We feel a change in temperature when more bonds are being broken than being formed or vice versa. Endothermic Reaction: a chemical reaction in which thermal energy is absorbed. The products will usually feel cold. The products will have more energy than the reactants. More chemical bonds are being broken in the reactants than being formed in the products. Examples: Baking, Photosynthesis, Dissolving salt in water, Melting ice cubes.