| A | B |
|---|
| Ion | charged particle that form during chemical changes |
| Base | any compound that increases number on hydroxide ions |
| valence electrons | electrons in outer most energy level |
| period | horizontal rows of periodic table of elements |
| group | vertical column of periodic table of elements |
| covalent bond | the force of attraction beween the nuclei of atoms and electons are shared |
| acid | any compound that increases hydrogen ions |
| covalent compound | do not have high melting points, do not dissolve well in water |
| Hydrocarbons | covalent bond that consist of hydrogen and carbons |
| Crystal Lattice | alternating pattern of positive and negative ions that is formed by ionic compounds |
| salt | ionic compound formed from the positive ion of a base and the negative ion of an acid |
| How many bonds do carbon make? | 4 |
| Which group of elements is the most reactive? | Alkali Metals |
| What do valence electrons determine | group |
| what group is nitrogen in? | Nitrogen group |
| Which group of element is the most abundant? | Transition metals |
| What are the properties of alkali metals? | - very reactive - found combined in nature - soft to cut |
| How do you determine valence electrons for groups 13-18? | subtract 10 from group # |
| What is produced when acid is mixed with metal? | hydrogen gas |
| What are the properties of covalent compounds? | -low melting point - dont dissolve well, - conducts electrical currents |
| Example of Hydrocarbons | Plastics |
| What charge will a solution have if it is mixed whti acid and base | neutral |
| Why does a ionic compound have a neutral charge? | combination of ion with equal number of + charge and - charge |
| Ionic compounds- # of electrons of metals | gain electrons |
| Ionic compounds- # of electrons of non metals | lose electrons |
| Acids have a pH level of | 7 or greater |
| Bases have a pH level of | 7 or lower |
| examples of organic compounds | fuel, rubbing alcohol, living things |
| single bonds | 1 pair of shared electrons |
| double bond | 2 pair of shared electrons |
| triple bond | 3 pair of shared electrons |
| properties of Acids | -hydronium ions - corrosive - poisonous - conduct - sour - change color |
| properties of Bases | - hydroxide ions - slippery - bitter - corrosive - conducts |
| together an acid and base form? | a salt |
