Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
Matter
|
Anything that has mass and occupies space.
|
|
Chemistry
|
The study of the properties of matter and how matter changes.
|
|
Physical Property
|
A characteristics of a substance that can be observed without changing the substance into another substance.
|
|
Chemical Property
|
A characteristic of a substance that describes its ability to change into different substances.
|
|
Physical Change
|
A change that alters the form or appearance of a material but does not make the material into another substance.
|
|
Chemical Reaction
|
The process in which substances undergo chemical changes that result in the formation of new substances.
|
|
Precipitate
|
A solid that forms from a solution during a chemical reaction.
|
|
Endothermic Reaction
|
A reaction that absorbs energy in the form of heat.
|
|
Exothermic Reaction
|
A reaction that releases energy in the form of heat.
|
|
Chemical Equation
|
A short, easy way to show a chemical reaction, using symbols
|
|
Reactant
|
A substance that enters into a chemical reaction.
|
|
Product
|
A substance formed as a result of a chemical reaction.
|
|
Conservation of Mass
|
The principle stating that matter is not created or destroyed during a chemical reaction.
|
|
Open System
|
A system in which matter can enter from or escape to the surroundings.
|
|
Closed System
|
A system in which no matter is allowed to enter or leave.
|
|
Coefficient
|
A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
|
|
Synthesis
|
A chemical reaction in which two or more simple substances combine to form a new, more complex substance.
|
|
Decomposition
|
A chemical reaction that breaks down compounds into simpler products.
|
|
Replacement
|
A reaction in which one element replaces another in a compound or when two elements in different compounds trade places.
|
|
Activation energy
|
The minimum amount of energy needed to get a chemical reaction started.
|
|
Concentration
|
A mixture of one material in a certain volume of another material.
|
|
Catalyst
|
A material that increases the rate of a reaction by lowering the activation energy.
|
|
Enzyme
|
A biological catalyst that lowers the activation energy of reactions in cells.
|
|
Inhibitor
|
A material that decreases the rate of a reaction.
|