Unit 1 Topic 3: Chemical reactions Flashcards
(20 cards)
Chemical reactions are…
Chemical reactions are processes that involves the breaking of chemical bonds in reactant molecules, to form atoms.
Single displacement reaction is a…
Single displacement reaction is a reaction in which one element is substituted for another element in a compound.
Double displacement reaction is a…
Double displacement reaction is a reaction in which two ionic substances react by exchanging their anions and cations.
Complete combustion occurs when…
Complete combustion occurs when a fuel is reacted with an adequate supply of oxygen to produce carbon dioxide and water.
Incomplete combustion occurs when…
Incomplete combustion occurs when a fuel is reacted with an inadequate supply of oxygen to produce carbon monoxide and water.
Combination reaction is a…
Combination reaction is a reaction in which two or more reactants combine to form one product
Decomposition reaction is a…
Decomposition reaction is a reaction in which one reactant breaks down into one or more products
A phase change occurs when…
A phase change occurs when matter changes to from one state (solid, liquid, gas) to another.
Deposition is…
Deposition is the phase transition in which gas transforms into solid.
Melting is…
Melting is the process in which a solid substance turns into a liquid
Freezing is…
Freezing is a transition where a liquid turns into a solid
Vaporization is…
Vaporization is when a liquid turns into a gas.
Condensation is…
The process in which a gas turns into a liquid.
Sublimation is…
Sublimation is the process in which a substance transforms directly from solid to gaseous state.
The Law of conservation of energy states…
The Law of conservation of energy states that in any chemical or physical process, energy is neither created nor destroyed, only transferred from one form to another.
Chemical energy is the…
Chemical energy is the energy that is stored in the bonds between atoms and molecules
Activation energy is the…
Activation energy is the minimum amount of energy that is required to initiate a chemical reaction.
Moles are a…
Moles are a unit of measurement that is used in chemistry.
How many molecules, atoms of ions are in one mole? (Also known as Avogadro’s number)
6.02 x 10^23
Molar mass is…
Molar mass is the mass of one mole of an element or compound
