Chemistry 1
How are ions formed?
By losing or gaining valence electrons
This is the shorthand term for a negatively charged ion.
What is an anion?
State the FULL orbital electron configuration of Ca
1s2 2s2 2p6 3s2 3p6 4s2
This element is the most electronegative on the periodic table.
What is Fluorine?
The sum of protons and neutrons in the nucleus of an atom is known as the _________
Mass number
What value do you use to find the number of neutrons in an element?
What is the mass number?
A solution with a pH of 3 is how many times more acidic than one with a pH of 6?
What is 1000 times?
What is the 25th element called?
Manganese or Mn
C-14 has how many neutrons?
8
What is the formula for density?
Density = Mass/Volume (Mass over volume)
How many periods are shown on the periodic table?
7
What are 6.022 x 1023 moles?
A chemical bond between two nonmetals is called a(n)
covalent bond.
A positive ion is known as a(n)?
Cation
What is a valence electron?
Electron in the outermost energy level
This value represents the average distance from the center of a nucleus to the outermost ring of the valence shell
What is the atomic radius?
Which is the correct formula for the compound formed between potassium and nitrogen?
K3N
What is in the nucleus in the atom?
protons and neutrons
Elements with the same number of protons but different number of neutrons
Isotope
Will oxygen accept or donate electrons? How many?
Accept two electrons
What are the elements in Group 18 called ?
Noble Gases
How many electrons are in the 3rd energy level?
18
What are the elements in Group 2 called ?
Alkaline Earth Metals
These compounds dissolve COMPLETELY into hydroxides in an aqueous solution.
What are strong bases?
Name all 3 subatomic particles.
Protons Neutrons Electrons
Name three ways to accelerate a chemical reaction.
Which is the correct formula for the compound chromium (II) oxide?
CrO
Name the compound CF4?
carbon tetrafluoride
What is the formula for zinc (II) bromide?
ZnBr2
Fluorine, chlorine, bromine, and iodine belong to the family of ______________
halogens
This type of radioactive particle is emitted when a neutron is compressed and ejects an electron from inside the nucleus?
What is a beta particle?
Elements in Group 5A form ions with a charge of ___
3-
What group of elements satisfies the octet rule without forming compounds (do not react)?
Noble gas
CO2 is this type of bond
Covalent bond.
Which of the following is always nonpolar?
H2O NH3 CBr3F I2
all diatomic molecules are always nonpolar - I2