Chpt 16 science vocab

Molecule
- neutral particle formed when atoms share electrons
Nucleus
- center fo the atom that contains the protons and neutrons
Subscript
- A number that is written a little below of text. Shows the number of particular element in a chemical formula.
coefficient

The number in front of some chemical formulas. An example would be the 3 in 3 NaCl
Compound
- Pure substance contining 2 or more elements that are chemically bounded.
chemical formula
- shows the kind and number of ataoms in a formula
electron cloud

space around the nucleus where electrons can be found
electron dot diagram
- symbol for the element surrounded by as many dots as there are electrons in its outer level
energy levels
- different areas in the electron cloud where an electron can be found
Ion
- an atom that is no longer neutral because it has gained or lost an electron
chemical bond

force that holds two atoms together
covalent bonds
- when atoms share electrons
double bond
- when 2 pairs of electrons are involved in a covalent bond
ionic bond
- Attraction which holds ions close together. Bond where electrons are gained or lost
Metallic Bonds

WHen metal atoms share their pooled neutrons
Polar Bond

Bond in which electrons are shared unevenly
Triple bond
- When 3 pairs of electrons are shared by 2 atoms
Valence Electrons
- The electrons in the outer energy level. The electrons that determine how elements react
Polar Molecule

Molecule where electrons are shared unevenly
Nonpolar Molecular

Molecule where electrons are shared evenly

Author

michelleroberts

ID

181119

Card Set

Chpt 16 science vocab

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Chapter 16 vocab

Updated

11/1/2012, 4:36:07 PM

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