Reactions and Bonds
Terms
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- The number of electrons needed to fill shells #1, #2, and #3 are
- 2,8,18
- Sodium has an atomic number of eleven. Its electron configuration for shells #1, #2, and #3 is
- 2,8,1
- The electrons that form or are reactive in forming an eight electron configuration are called the
- valence shell
- Neon, which has the atomic number of ten, has an electron configuration for shells #1 and #2 of
- 2,8
- Phosphorus, which has the atomic number of fifteen, has an electron configuration for shells #1, #2, and #3 of ___ and will ___ to satisfy the rule of eights.
- 2,8,5 and gains 3 electrons
- An atom that carries a charge is called
- an ion
- A sodium ion, Na+, is an example of
- an cation
- A chloride ion, Cl-, is an example of
- an anion
- The attractive force which holds oppositely charged ions together is called
- an ionic bond
- The number of electrons that form a single covalent bond is
- two (a pair)
- The number of electrons that form a double covalent bond is
- four (two pair)
- How many pairs of electrons are involved in the covalent bond between two atoms of oxygen (atomic number of eight)?
- two
- The molecular formula of oxygen is
- O2
- How many pairs of electrons form the covalent bonds in a molecule of methane which consists of a carbon atom with four hydrogen atoms? (carbon-atomic number 6, hydrogen-atomic number 1)
- four
- The molecular formula of methane is
- CH4
- Using a molecular model kit, the holes in the balls ("atoms") represent
- covalent bonding sites
- Using a molecular model kit, the dowels and springs represent
- covalent bonds
- A reaction that joins smaller molecules into a larger molecule and produces water is called
- dehydration synthesis
- A reaction that splits a larger molecule into smaller molecules by the addition of water is called
- hydrolysis