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Matter and bonding
Physical science
| Question | Answer |
|---|---|
| Density | The amount of mass in a given volume |
| Homogeneous Mixture | Compounds or elements within the mixture are evenly distributed |
| Heterogeneous Mixture | Compounds or elements within a mixture are unevenly distributed |
| Kinetic theory of matter | Matter is made up of particles that are in constant motion |
| Solids have | Fixed shapes and fixed volumes |
| Liquids have | No fixed shape and fixed volume |
| Gasses have | No fixed shape or volume |
| What is the formula for density | M/V |
| What are density's units | g/ml and or g/cm3 |
| Group 1 oxidation number is | +1 |
| Group 2 oxidation number is | +2 |
| Group 13 oxidation number is | +3 |
| Group 14 oxidation number is | +/- 4 |
| Group 15 oxidation number is | -3 |
| Group 16 oxidation number is | -2 |
| Group 17 oxidation number is | -1 |
| Group 18 oxidation number is | 0 because it has a full valence shell |
| What is an Ionization number | Losing or gaining electrons to fill a valence shell |
| What is a Oxidation number | The change of an ion takes due to losing or gaining electrons |
| What is an Ionic bond | A metal donates electrons to a nonmetal |
| What is a Covalent bond | A pair of shared electrons between two atoms |
| What are 3 properties that a Ionic bond has | 1.)High melting and Boiling points 2.)Conductivity 3.)Brittle |
| What are 3 properties that a covalent bond has | 1.)Soft and flexible 2.)Low melting and boiling points 3.)Don't conduct or dissolve |
| What is polar covalent bond | Atoms do not share electrons |
| What is a non-polar covalent bond | Atoms shared equally |
| Electronegativity for ionic | More than 1.7 |
| Electronegativity for Polar covalent | .5-1.7 |
| Electronegativity for Non-polar covalent | 0-.5 |
| On a phase change where is the temperature not changing | When it is melting |
| On the phase change when the kinetic energy is at the highest its is a | Gasses |
| On the phase change when the kinetic energy is at the lowest its is a | Solids |
| Hydrogen bond is | a week bond between two atoms |