The periodic table is organized from rising atomic number.
What is the periodic table organized into?
100
Metals
Most of the periodic table is made of ____.
100
Uncuttable
What is the definition of atomos?
100
Scientists around the world built on Niels Bohr's model.
Who discovered and modeled the modern atom model used today?
100
Atoms
What are molecules made of?
200
Dimitri Mendeleev created the first periodic table.
Who created the first periodic table?
200
Lanthanides
What is the name of elements with the atomic numbers 57~71?
200
A particle with no charge.
What is the neutron?
200
If the nucleus is the pitcher's mound, the electrons could be as far away as the top seats.
What is an example of how far away electrons and atoms are in relation to a baseball field?
200
Copper wires
What is an example of being ductile?
300
3 to 12
The transition metals are from groups __ to __.
300
Actinides
What is the name of elements with atomic numbers from 89~103?
300
The particle with a positive charge.
What is the proton?
300
James Chadwick
Who was the discoverer of the neutron?
300
A metal's ability to change into another shape.
What does the word "malleable" mean?
400
There are 118 elements.
What is the total number of elements in the periodic table?
400
Solid
What is the main state of matter in the periodic table?
400
A particle with a negative charge.
What is the electron?
400
The cloud atom model is the modern atom. It is mostly empty space, but the nucleus is in the middle and on the edge of the empty space, the electrons orbit the nucleus.
Describe the cloud atom model.
400
Copper and Tin
What is the makeup of bronze? (Hint: 2 elements)
500
18
What group number is inert gases?
500
Synthetic elements
What are the elements above atomic number 92 usually called?
500
The number of protons and neutrons in the nucleus of an atom.
What is the atomic number?
500
Mostly empty space with electrons surrounding the nucleus.