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;
30 Cards in this Set
- Front
- Back
Chemical Bond
|
interaction that holds atoms together
forms when electrons are shared, lost, or gained (ex) ionic and covalent |
|
Valence Electron
|
electrons in the outermost energy level that is directly involved in chemical bonding
|
|
Ionic Bond
|
forms when atoms gain or lose electron(s)
|
|
Covalent Bond
|
forms when atoms share electron(s)
|
|
Ion
|
charged particles formed when atoms gain or lose electrons
|
|
Molecule
|
smallest unit of a substance that keeps all of the physical and chemical properties of that substance
|
|
Metallic Bond
|
bond formed by the attraction between positively charged metal ions and the electrons in the metal
|
|
Diatomic Molecules
|
molecules composed of at least two covalently bonded atoms
|
|
Electron Dot Diagram
|
shows only the valence electrons in an atom and can help predict how atoms might bond
|
|
Positive Ion
|
forms when electrons are given up
|
|
Negative Ion
|
form when electrons are gained during an ionic bond
|
|
Chemical Formula
|
shorthand way to use chemical symbols and numbers to represent a compound
|
|
Subscript
|
number written below and to the right of the chemical symbol of an element; represents the number of atoms of that element
|
|
Reactant
|
starting material in a chemical reaction
|
|
Product
|
substance(s) formed from a chemical reaction
|
|
Chemical Reaction
|
uses symbols to show the relationship between the reactants and the products
|
|
Law of Conservation of Mass
|
mass is neither created nor destroyed in chemical and physical changes
|
|
Coefficients
|
number that is placed in front of a chemical symbol or formulat
|
|
Synthesis Reaction
|
two or more substances combine to form on new compound
A + B --> AB |
|
Decomposition Reaction
|
a single compound breaks down to form two or more simpler substances
AB --> A + B |
|
Single-Displacement Reaction
|
products are a new compound and a different element
A + BC --> AC + B |
|
Double-Displacement Reaction
|
ions from two compounds exchange places
AB + CD --> AD + CB |
|
4 Signs of a Chemical Reaction
|
Precipitate forms
Gas Produced Chemical color changed Heat Produced |
|
Exothermic Reaction
|
Energy/ Heat is released
(ex) glow sticks |
|
Endothermic Reaction
|
Energy is taken in
(ex) photosynthesis |
|
Law of Conservation of Energy
|
Energy is can be created nor destroyed; however energy can change forms
|
|
Activation Energy
|
smallest amount of energy required to start a chemical reaction
|
|
Factors Effecting Chemical Reactions
|
Temperature
Concentration Surface area Presence of an inhibitor or catalyst |
|
Inhibitor
|
substance that slows down or stops a chemical reaction
|
|
Catalyst
|
substance that speeds up a chemical reaction with out being permanently changed
|