Chapter 1
proper safety equipment for a lab
Goggles and apron
The chemical symbol for Chlorine
Cl
What is the mass of an electron?
1/2000 amu
How many valence and core electrons does Florine have?
7 valence e- and 2 core e-
What is the HONC 1234 rule?
H makes 1 bond
O makes 2 bonds
N makes 3 bonds
C makes 4 bonds
True or false: Cells are matter
True
2nd to last column is called
Halogens
How do you know the # of protons in an atom?
# of protons = atomic #
What are negatively charged ions called?
anions
What does a Keytone smell like?
Minty
The equation for Density
Mass divided by Volume
Where are the solids located on the Periodic table?
Left side
Atoms of the same element with different numbers of neutrons
What is the Rule of Zero Charge?
When a metal and non-metal bond, the compounds total charge must be zero
What is the functional group for an ester?
COOC
The law of conservation of matter
Matter cannot be created or destroyed
How is the periodic table organized?
By mass, volume, and types of substances
What is the average atomic mass of Silicon given:
Si-28 92.21%
Si-29 4.7%
Si-30 3.09%
28.11
What is the Noble Gas Short cut?
Starts with nearest Noble gas, which has fewer e-, then add to it
What is a double bond?
2 atoms sharing 2 pairs of electrons
Calculate the density of seawater if 15g has a volume of 14.6mL
1.03 g/mL
What group on the periodic table is the least reactive?
Noble Gases
What is the average atomic mass for fluorine if:
35 is 75% of the mass and 37 is 25% of the mass?
35.5 amu
What is the electron configuration for Chromium?
1s22s22p63s23p64s23d4
What is the Lewis Dots Structure?
A drawing of the molecule using dots to represent valence electrons