Science Test Review Flashcards
(17 cards)
Define decomposition reaction
The decomposing of a product into 2 elements
Define Synthesis Reaction
2 elements react to form a compound
Define Single Displacement
A reaction in which an element displaces another element in a compound
Define Double displacement
A reaction that occurs when elements in different compounds displace each other or exchange places, producing two new compounds
What is a combustion reaction? What are the products?
A combustion reaction is the rapid reaction of a substance with oxygen to produce oxides and energy. The products are Carbon dioxide, water and energy
What is corrosion?
The breakdown of metal resulting from reactions with chemicals in its environment.
Define Acid
An aqueous solution that conducts electricity and neutralizes bases. Turns blue litmus paper red
Define base
An aqueous solution that conducts electricity and turns red litmus paper blue
Devine an indicator
A substance that changes when it’s conditions in its solution change.
What are the properties of an acid?
Reacts with metal, has a pH lower than 7, conducts electricity, Tastes sour.
What is a neutralization reaction?
A chemical reaction in which an acid and a base react to form an ionic compound.
What are the two groups of acids?
Binary acids and oxy acids
What is acid precipitation? What are two compounds largely responsible for it?
Acid precipitation is any precipitation with a pH less than the normal pH of rain. Soulful dioxide and nitrogen dioxide are largely responsible
What is the difference between a physical and chemical change?
Physical change is a change that can be reversed whereas a chemical change is a change that cannot be reversed.
What are substances on the left called? What are the ones on the right called?
Reactants are on the left and products are on the right.
What is the difference between ionic and covalent compounds?
Ionic compound is a metal and a non-metal whereas covalent is two non-metals.
What is the law of conservation of mass?
The mass of the reactant is equal to the mass of the product
