Scientists of the Small
First scientist who believed that matter is made up of atoms
Who is Democritus?
The number of protons in an atom
What is atomic number?
Both this mixture and a solution can pass through fine filters.
What is a colloid?
Rows on the periodic table
What are periods?
This part of an atom is dense and positively charged.
What is the nucleus?
Scientist who discovered the electron
Who was Thomson?
The number of protons plus neutrons in an atom
What is the mass number?
This mixture is a solid solution of metals, such as bronze.
What is an alloy?
Columns on the periodic table
What are groups?
The smallest particle into which an element can be divided and still be the same substance.
What is an atom?
Scientist who discovered the nucleus
Who is Rutherford?
The mass of an atom
What is atomic mass?
This mixture does not scatter light.
What is a solution?
Elements located on the upper right of the periodic table?
What are nonmetals?
In a salt solution, it is the salt
What is the solute?
Scientist who believed electrons lived in circular orbits.
Who is Bohr?
A particle that has no charge
What is the neutron?
A substance composed of elements that lose their characteristic properties.
What is a compound?
Elements located on the lower left of the periodic table
What are metals?
Diamond and soot is made of this
What carbon?
Scientist who believed that electrons were located in clouds.
Who is Schrödinger?
Scientist who discovered that lightning is electricity
Who is Benjamin Franklin?
Amount of a substance in a given quantity of a mixture, solution, or ore
What is concentration?
Elements on either side of the zigzag line.
What are metalloids?
Principle that states that the properties of elements are cyclical
What is the periodic law?