Chemical reactions Flashcards
What is a chemical reaction
New products are formed; old bonds between reactants are broken and new bonds between products are formed
What is a phase change
-The molecular formula of a substance stays the same but its form changes
Signs of a chemical reaction
-Change in color
-A gas is produced (bubbles, fizzing)
A change in temperature
-A smell occurs
What is combustion
-When oxygen combines with fuel to form carbon dioxide and water.
-The fuel is always made up of carbon and hydrogen
What is synthesis
-A chemical reaction where 2 compounds interact to form a new molecule
What is acid-base
A chemical reaction that occurs between an acid and a base to form water and a salt
What is decomposition
-A chemical reaction where a reactant breaks down into 2 or more products
