Classifying Matter
What is matter?
Something that has mass and occupies space
What is the metric unit for mass?
What is an atom called if it loses an electron?
Cation
How many electrons can fit in the P sublevel?
6
What is the chemical formula for sodium nitride?
Na3N
What do particles within a solid do?
Vibrate at fixed positions
What is it called when you get close to the same answer repeatedly, regardless of whether or not it is correct?
Precision
Which scientist was famous for the gold foil experiment, and discovered that atoms are mostly empty space?
Rutherford
What are the three rules for writing Orbital Diagrams?
Aufbau Principle, Pauli Exclusion Principle, and Hund's Rule
What is the name of the compound Al(CN)3?
Aluminum Cyanide
What can the liquid state of matter be described as?
Having a definite volume, but not a definite shape.
Where should you measure from on a graduated cylinder?
The Meniscus
What laws were Dalton's Atomic Theory based on?
Law of conversation of mass, Law of definite proportions, and Law of multiple proportions
What are the most reactive metals called?
Alkali Metals
What is the chemical formula for Chromium (III) Hydroxide?
Cr(OH)3
What is chemistry?
The study of matter and its changes
What is the formula for density?
Density = Mass / Volume
A radioactive sample has a half life of 5 days. What percentage of the sample remains after 20 days?
6.25%
What two periodic trends increase from left to right and from bottom to top?
Electronegativity and Ionization
What is the name of the compound SF6?
Sulfur hexaflouride
What is the phase change from a solid to a gas called?
Sublimation
What is the formula for percent yield?
(actual yield / theoretical yield) x 100%
The half life of cobalt is 5.26 years. If you have 28 grams of cobalt, how many grams would remain after 15.78 years?
3.5 grams
Who ordered the first periodic table by increasing atomic mass?
Dmitri Mendeleev
What is the name of a molecular shape with three atoms attached and one atom with unpaired electrons?
Trigonal Pyramidal