Chapter 1
Define Matter?
An object with volume and mass
What does the (aq) followed by an element or compound mean?
It is an Aqueous Solution
What is an isotope?
Atoms of the same element with different numbers of neutrons
What is are valence electrons?
The electrons in the outermost, highest energy shell
What is the definition of dissolve?
Forms an aqueous solution, looks clear
Is love matter?
No, love is a concept and can not be weighed or seen
Which group of elements are the least reactive?
Noble Gases
Where are neutrons found in an atom?
In the shells outside of the nucleus
How many valence electrons are needed to have a full electron shell
8, except for H and He which need 2
How is a molecular covalent bond formed?
When 1 or more pairs of electrons are easily shared between 2 atoms
Is the meniscus measured from the top or bottom?
Bottom
What is the name of the compound, NaCl
List the 3 main subatomic particles in an atom and their charges
Proton: positive
Neutron: neutral/no charge
Electron: negative
What rule do we follow when creating ionic compounds?
The rule of zero charge
What is the HONC 1234 rule?
H gets 1 bond
O gets 2 bonds
N gets 3 bonds
C gets 4 bonds
What is the formula for density?
Mass divided by Volume
What does the Law of Conservation of Matter state?
Matter can not be created nor destroyed, only changed in form
What color flame would a compound containing copper emit?
Green
What gets transferred when forming an ion?
Electrons
How can you tell how many "dots" or valence electrons an element has?
By their family on the periodic table and how many columns away they are from the noble gases
What is the volume of an object submerged in water if the volume of the water without the object is 30 and the volume of the water with the object is 36?
6
What is the molecular formula for Sodium Hydroxide?
NaOH
What is the average atomic mass of Cl if 75.53% is Cl-35 and 24.47% is Cl-37?
35.5 amu
What charge does C get when forming an ionic bond?
Either +4 or -4
What is the smell of an alcohol?
Sweet/floral, camphor, minty, or medicinal