Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Interact of Matters
Unit 7 science 8 vocab
| Question | Answer |
|---|---|
| Chemical Bond | A force of attraction that holds two atoms together |
| Valence Electrons | The electrons in the outermost energy level of an atom; these electrons are involved in forming chemical bonds |
| Ionic Bonds | The force of attraction between oppositely charged ions |
| Covalent Bonds | The force of attraction between the nuclei of atoms and the electrons shared by the atoms |
| Metallic Bonds | The force of attraction between a positively charged metal ion and the electrons in a metal |
| Ions | charged particles that form during chemical changes when one or more valence electrons transfer from on atom to another |
| Crystal Lattice | a repeating 3-dimensional pattern of ions |
| Molecule | a neutral group of atoms held together by covalent bonds |
| Malleability | The ability of a substance to be pounded into thin sheets |
| Ductility | The ability of a substance to be stretched into a wire |
| Chemical Reactions | The process by which one or more substances undergo change to produce one or more different substances |
| Chemical Formula | A shorthand notation for a compound or diatomic element using chemical formulas and symbols |
| Chemical Equation | A shorthand description of a chemical reaction using chemical formulas and symbols |
| Reactants | The starting materials in a chemical reaction |
| Products | The substances formed from a chemical reaction |
| Conservation of Mass | Mass is neither created nor destroyed in ordinary chemical or physical changes |
| Synthesis Reaction | A reaction in which two or more substances combine to form a single compound |
| Decomposition Reaction | A reaction in which a single compound breaks down to form two or more simpler substances |
| Single-Replacement Reaction | A reaction in which an element takes the place of another element in a compound; this can occur only when a more-reactive element takes the place of a less-reactive one |
| Double-Replacement Reaction | A reaction in which ions in two compounds switch places |
| Exothermic Reaction | A chemical reaction in which energy is released or removed |
| Endothermic Reaction | A chemical reaction in which energy is absorbed |
| Activation Energy | The minimum amount of energy needed for substances to react |
| Catalyst | A substance that speeds up a reaction without being permanently changed |
| Inhibitor | A substance that slows down or stops a chemical reaction |
| ion | An atom that has a positive or negative charge due to the loss or gain of electrons. |
| decomposition | A chemical reaction in which the reactants are broken apart; the chemical breakdown of a substance into simpler substances. |
Created by:
red8
Popular Physical Science sets