Term
|
Definition
| - positive (+) ions and form when a neutral atom loses electrons. They are smaller then their parent atom. |
|
|
Term
| What makes oxygen special? |
|
Definition
|
|
Term
| What makes nitrogen special? |
|
Definition
|
|
Term
|
Definition
positively charged nuclear particle.
mass= 1 |
|
|
Term
|
Definition
a neutrl nuclear particle.
mass= 1
charge= 0 |
|
|
Term
|
Definition
| small and negatively charged (-) |
|
|
Term
|
Definition
| protons and electrons in the atoms nucleus |
|
|
Term
|
Definition
| electrons are found in clouds (orbitals) around and atoms nucleus. |
|
|
Term
|
Definition
| the number of protons plus the number of neutrons |
|
|
Term
|
Definition
| the number protons in anatoms nucleus |
|
|
Term
|
Definition
| atoms with equal numbers of protons, but differ the the number of neutrons |
|
|
Term
|
Definition
| Mass number-atomic number |
|
|
Term
|
Definition
| negative ions and form when a neutral atom gains electrons. They are larger then the parent atom. |
|
|
Term
Ernest Rutherford's Experiment
[image] |
|
Definition
| showed that the atom is mostly empty space with a small, dense, positively charged nucleus. |
|
|
Term
|
Definition
| discovered the electron and developed the plum pudding model of the atom with positive and negative charges spread throughout entire atom |
|
|
Term
| Creator of the model of the atom that was uniform throughout? |
|
Definition
|
|
Term
|
Definition
| placed electrons in planetary-like orbits around the nucleus of the atom |
|
|
Term
|
Definition
| the current model of the atom with electrons in "clouds" (orbitals) around the nuclueus |
|
|
Term
|
Definition
standard Temperature Pressure
(273 Kelvin and 1 atm) |
|
|
Term
| How do electrons emit energy as light? |
|
Definition
| Electrons emit energy as light when they jump from higher energy levels back down to lower (ground state) energy levels. Bright line spectra are produced. |
|
|
Term
|
Definition
| pure substance made up of only one kind of atom and can not be broken down |
|
|
Term
|
Definition
| substance made up of only two kinds of atoms (Ex: NH3, H2O, CO2) |
|
|
Term
|
Definition
| elements that form two atom molecules in their natural form at STP. Mr. BrINClHOF) Br2, I2,N2,Cl2, H2, O2, F2 |
|
|
Term
| Liquid at room temperature? |
|
Definition
|
|
Term
|
Definition
| gases at room temperature. |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| Dalton's Law of Partial Pressure |
|
Definition
|
|
Term
Significant Figures
[image] |
|
Definition
If the decimal point is present, start counting digits from the Pacific (left) side,
starting with the first non-zero digit.
1 2 3
0.00310 (3 sig. figs.)
If the decimal point is absent, start counting digits from the Atlantic (right) side,
starting with the first non-zero digit.
3 2 1
31,400 (3 sig. figs.) |
|
|
Term
|
Definition
| a homogeneous mixture whose particle are really small. (Air, salt water, etc.) |
|
|
Term
|
Definition
mixtures that has discernable components and are not uniform
throughout. (Chocolate-chip cookies, vegetable soup, soil, muddy water, etc. |
|
|
Term
|
Definition
-the substance being dissolved
-the substance that dissolves the solute
(Water is the solvent in Kool-Aid, while sugar is the solute.) |
|
|
Term
|
Definition
Isotopes are written in a number of ways: C-14 is also Carbon-14, and is also
mass number 14C
atomic number 6 |
|
|
Term
|
Definition
The distribution of electrons in an atom
Electron configurations are written in the bottom center of an element’s box on the
periodic table in your reference tables. |
|
|
