Science Chemistry quiz cards #1 Flashcards
(16 cards)
Chemical Change
A change in matter that produces one or more new substances
Physical Change
Change that alters the appearance/form of material but does not make it into another substance
Matter
Matter anything that has mass and takes up space
Chemistry
The study of properties matter and how it changes
Precipitate
Solid that forms from a solution during chemical reaction
Chemical Equation
Short, easy way to show a chemical reaction using symbols
Chemical formula
Combination of symbols that represents elements in compound
Product
Substance formed as a result of chemical reaction
Reactant
Substance that enters into a chemical reaction.
Synthesis reaction
A chemical reaction when two or more simple substances combine to form new, complex substance
Replacement reaction
Reaction when one element replaces another in compound or when two elements in different compounds trade places
Decomposition reaction
Chemical reaction that breaks down compounds into simpler products
Subscript
Number in a chemical formula. Tells the number of atoms in molecule or ratio of elements in compound
Coefficient
Number in front of chemical formula in equation that includes how many molecules/atoms of each reactant/product are involved in reaction
Open system
Matter can enter from or escape to the surroundings
Closed system
Matter is not allowed to enter or exit.