Chemical Changes Flashcards
What is it called when two elements are chemically bonded together?
Compound.
Endothermic reaction
Energy is absorbed from it’s surroundings.
Exothermic reaction
Energy is released into the surroundings.
In an equation you have reactants and products. Which is on the left of the arrow and which is on the right?
_______ —-> ________
Reactants —–> Products
Combustion is an example of what reaction?
Oxidation
Metal reacts with oxygen to produce?
Metal oxides
Complete the equation:
Magnesium + oxygen —–> ___________
Magnesium oxide
Non metal reacts with oxygen to produce?
Non metal oxides
Complete the equation:
Sulfur + oxygen ——> ___________
Sulfur dioxide
Some compounds break down when heated, forming two or more products from one reactant. This type of reaction is called?
Thermal decomposition
Example of thermal decomposition:
copper carbonate —–> __________
copper oxide + carbon dioxide
Thermal decomposition is an example of what reaction?
Endothermic reaction
Combustion is an example of what reaction?
Exothermic reaction
What is a displacement reaction?
When a more reactive metal displaces a weaker metal in a compound.
