VOCAB
An endothermic reaction is any chemical reaction that absorbs heat from its environment. The absorbed energy provides the activation energy for the reaction to occur. A hallmark of this type of reaction is that it feels cold.
Photosynthesis
a common animal with four legs, especially kept by people as a pet
Dog
An _______ ______ is any chemical reaction that absorbs heat from its environment. The absorbed energy provides the activation energy for the reaction to occur. A hallmark of this type of reaction is that it feels cold.
Endothermic reaction
These words refer to feeling unhappy or showing unhappiness or emotional pain. The most common word for this is ___.___ is used to describe a feeling of lowness or unhappiness that comes usually because something bad has happened. She's been sad ever since her cat died.
Sad :[
The _____ (or mid-) infrared colors are found at even longer wavelengths. The light that we see with our eyes originates from a glowing source, a light bulb or the sun
thermal [ light ] energy
An _______ _______ is a chemical reaction that releases energy by light or heat. It is the opposite of an endothermic reaction.
Exothermic reaction
_______ (also called _____) is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other
Thermal [heat] energy
The chemical substances which are formed due to a chemical reaction between two or more chemical substances
Products
________ is the study of heat transfer. ________ is specifically the study of heat transfer in chemical reactions.
Thermochemistry
________ are the starting materials in a reaction that undergo a chemical change to form a product
reactants