Chemistry 1
What number do you use to find the number of protons?
atomic number
What are the 3 main states of matter?
Solid, liquid, gas
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 is the atomic number of argon (Ar)?
18
A chemical bond between two nonmetals is called a
covalent bond.
A positive ion is known as a?
Cation
What type of elements are the most abundant on the periodic table?
Metal
What are the elements in Group 18 called ?
Noble Gases
How many groups are on the periodic table?
18
Name the scientist who first include the nucleus in its atomic model
Rutherford
What are the elements in Group 1 called ?
Alkali Metals
Name all 3 subatomic particles.
Protons Neutrons Electrons
How are ions formed?
By losing or gaining electrons
A negatively charged ion
Anion
This model of the atom claims that electrons are scattered throughout the atom.
What is the Thomson model?
The Chloride ion (Cl-) has _____e-
18 e-
The sum of protons and neutrons in the nucleus of an atom is known as the _________
Mass number
This type of molecule has an even distribution of charge, and is therefore symmetrical.
What is a nonpolar molecule
This describes what electrons are doing when lithium bonds with fluorine
What is transferring?
What particles are in the nucleus of the atom?
protons and neutrons
Elements with the same number of protons but different number of neutrons
Isotope
Name the scientist who first include the electrons in its atomic model
Thomson
A covalent bond is a sharing of
Electrons
This scientist performed the Gold Foil Experiment:
Who is Rutherford?
The compound CCl4 has an even distribution of charge. What type of polarity does it have?
What is nonpolar?
What is the formula for cobalt (II) iodine?
CoI2
Lithium, sodium, potassium, rubidium, caesium and francium belong to the family of ______________
Alkali metal
This is defined as the weighted average mass of all the naturally occurring isotopes of an element.
What is Atomic Mass?
Cl-35 and Cl-37 are refferred to as this:
What are isotopes?
KF has this type of bond
What is Ionic?
N2O3 containes this type of bond
What is a Covalent bond.
A type of elements with properties between metals and non metals
What are metalloids?