A. Pure Substances & Mixtures
Salt water is an example of a
Solution
The most stable family on the periodic table are the
Noble Gases
The atomic number gives you what two pieces of information?
# of Protons & Electrons
The reason you are doing a lab.
Purpose
Trail mix is an example of a
Mechanical Mixture
Elements in the same period have the same number of
Electron Shells
How do you find the number of neutrons?
Atomic Mass - Atomic Number
An educated guess of what will happen.
Hypothesis
Brass and steel are examples of
Alloys
Elements in the same family have the same number of
Valence Electrons
How many electrons fit in the first, second and third shells?
2,8,8
A chart, table, or diagram of what occurred in the lab.
Observations
Pure substances are elements and
Compounds
The group of elements that often react with the alkali metals.
Halogens
What element has zero neutrons?
Hydrogen
A series of questions about the lab’s observations.
Analysis