Chemical Reaction 101
A student dissolves a salt in water for a lab. This is....
What is NOT evidence of a chemical reaction?
solid to liquid is called what?
what is a physical reaction
present at the beginning of a reaction
What is a reactant?
when a new compound is formed by a combination of simpler reactants.
What is synthesis?
substance that increase the rate of chemical reaction but is not consumed in reaction
What is a catalyst
When 2 or more materials are combined with no reaction?
What is a mixture made?
atoms or chemicals broken down or combined to form a new substance
What is a chemical reaction?
substances formed by the chemical reaction
What is a product
the process of reverse synthesis
What is decomposition?
catalyst that are used by living things to cause a chemical reaction
What are enzymes
This is created when one material dissolves in another with no reaction.
How a solution is created.
What is a physical reaction?
color change
what is the effect of a chemical reactions
one reactant is always oxygen and one often contains carbon and hydrogen
What is combustion?
Energy to break chemical bonds
What is bond energy?
This is formed when two materials combine to form a new substance.
What is a reaction?
liquid to gas
What is a physical reaction?
when the temperature is down
what is endothermic
measure the number of particles measured in a certain volume.
What is concentration?
The opposite of photosynthesis
What is respiration
precipitate
What is a solid formed when 2 solutions react?
when the temperature is up
What is exothermic
the exposed surface of a substance.
What is a surface area?
steps to the scientific method?
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