Unit 1
What is the study of matter that contains carbon?
Organic Chemistry
Who discovered the presence of an electron?
J.J. Thomson used a cathode ray tube to deduce the presence of a negatively charged particle, electron.
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)
What is the study of chemistry in living things?
Biochemistry
Who created the Plum Pudding Model?
J.J. Thomson
How many total electrons does the F- ion have?
10 electrons
A positive ion is known as a?
Cation
What is the formula for average atomic mass?
(Abundance x Mass Weight) + (Abundance x Mass Weight)
What is a Scientific Law?
A law summarizes what happens
Who discovered the mass of an electron?
Millikan
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
What are metals known for?
Being good conductors, ductile, and malleable.
What is a Scientific Theory?
A theory (model) is an attempt to explain why it happens.
Who discovered the nucleus?
Rutherford
What is a group?
A column in the periodic table.
Which particle has no charge?
Neutrons
Name all 3 subatomic particles.
Protons Neutrons Electrons
What is an atom?
The smallest unit of an element that maintains the properties of that element.
What experiment was used to discover the nucleus?
Gold Foil Experiment
What is the unit of measurement for mass?
grams
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
What are the three main states of matter?
Solid, liquid, and gas.
What is a chemical reaction?
Transformation of a substance into one or more new substances.
If Aluminum has an Atomic Number of 13 and an Atomic Mass of 27, how many protons does it have?
13
What is the unit of measurement for volume?
Liter
Relation between the amount of solute and solvent in a solution.
Concentration