Atoms
The center of an atom
What is a nucleus?
Hydrogens atomic number
What is 1?
Elements are _____________
Pure substances
NaCl
Sodium chloride
The word atom is derived from the ancient Greek adjective
Atomos
Positively charged particles
What are protons?
The rows in the periodic table
What are periods?
How elements are represented
What is chemical symbol/atomic number?
Mixture that is evenly dispersed throughout
What is homogenous?
Who invented the cloud model
Erwin Schrödinger
The three subatomic particles that make up an atom
What are protons, neutrons and electrons?
The columns in the periodic table
What are groups?
Atomic mass of carbon
What is 12.011?
What is solute?
Known for his development of the atomic theory
What is Democritus?
Determines the atomic number
What are protons?
The element with chemical symbol Fe
What is iron?
Which element has 2 protons and 2 neutrons?
Two or more atoms make up
What are molecules/compounds?
The atomic model used today
What is modern atomic model (Bohr Model)?
Makes up most of an atom
What is empty space?
The number of protons found in gold
What is 79?
Group 1 elements on periodic table
What are alkali metals?
Mixtures that have two or more substances are __________
Chemically combined