Question | Answer |
A neutral group of atoms that are held together by covalent bonds. | Molecule |
A single molecule of a chemical compound is an individual unit capable of | existing on its own |
A chemical compound whose simplest units are molecules | molecular compound |
The composition of a compound is given by its | chemical formula |
Indicates teh relative number of atoms of each kind in a chemical compound by using atomic symbols and numberical subscripts | chemical formula |
Shows the types and numbers of atoms combined in a single molecule of a molecular compound | molecular formula |
A molecule containing only two atoms | Diatomic molecule |
an example of a diatomic molecule is | Oxygen |
The relative strength of attraction and repulsion between the charged particles depends on | The distance separating the atoms |
When the atoms first sense each other, the electron-proton attraction is | stronger than the elecron-electron and proton-proton repulsions. |
The bottom of the valley in the curve of an atom energy graph represents | The balance between attraction and repulsion in a stable covalent bond. |
The distance between two bonded atoms at their miniumum potential energy, that is, the average distance between two bonded atoms is | bond length |
What is the bond length of a hydrogen-hydrogen bond | 75 pm |
The amount of energy released equals the difference between the potential energy at zero level (separated atoms) and what | that at the bottom to the valley (bonded atoms). |
The energy required to break a chemical bond and form neutral isolated atoms | Bond energey |
Scientist usually report bond energies in what | kilojoules per mole (kJ/mol) |
Kilojoules indicates what | the energy required to break one mole of bonds in isolated molecules |
What is the Average bond length and Average Bond energy for H - H | Length 75; Energy 436 |
What is the Average bond length and Average Bond energy for F - F | Length 142; Energy 159 |
What is the Average bond length and Average Bond energy for CI - CI | Length 199; Energy 243 |
What is the Average bond length and Average Bond energy for Br - Br | Length 229; Energy 193 |
What is the Average bond length and Average Bond energy for I - I | Length 266; Energy 151 |
What is the Average bond length and Average Bond energy for H - F | Length 92; Energy 569 |
What is the Average bond length and Average Bond energy for H - CI | Length 127; Energy 432 |
What is the Average bond length and Average Bond energy for H - Br | Length 141; Energy 366 |
What is the Average bond length and Average Bond energy for H - I | Length 161; Energy 299 |
What is the Average bond length and Average Bond energy for C - C | Length 154; Energy 346 |
What is the Average bond length and Average Bond energy for C - N | Length 147; Energy 305 |
What is the Average bond length and Average Bond energy for C - O | Length 143; Energy 358 |
What is the Average bond length and Average Bond energy for C - H | Length 109; Energy 418 |
What is the Average bond length and Average Bond energy for C - CI | Length 177; Energy 327 |
What is the Average bond length and Average Bond energy for C - Br | Length 194; Energy 285 |
What is the Average bond length and Average Bond energy for N - N | Length 145; energy 163 |
What is the Average bond length and Average Bond energy for H - H | Length 101; Energy 386 |
What is the Average bond length and Average Bond energy for O - H | Length 96; Energy 459 |
Chemical compounds tend to form so that each atom, by gaining, losing, or sharing electrons, has an octet of electronsin its hightest occupied energy level | Octet rule |