Physical/Chemical
All about Atoms
Not
Bohr-ing
Bohr-ing
Periodic Table
Weird Chemistry
100
Baking cookies is an example of this type of change.
What is chemical change?
100
This tiny particle is the building block of all matter.
What is an atom?
100
This is the correct Bohr diagram for hydrogen.
What is correct?
100
The periodic table is ordered by this number. It also represents the number of protons in an atom of an element.
What is atomic number?
100
This element is the lightest element on the periodic table and is also the main fuel used by stars.
What is hydrogen?
200
Two examples of physical properties.
What is color, state, melting point, boiling point, luster, density, malleability, texture?
200
An electron is a subatomic particle found in atoms and it has this type of charge.
What is negative?
200
The number of neutrons can be found using this expression.
What is atomic mass - number of protons?
200
The rows and columns of the periodic table.
What are groups and periods?
200
This gas makes up about 78% of the air you breathe, even though your body cannot use it directly for breathing.
What is nitrogen?
300
Two pieces of evidence a chemical change has occurred.
What are bubbles, change in energy/color/odor, an irreversible change, or a new substance is formed.
300
Atomic mass is calculated using these two subatomic particles.
What are protons and neutrons?
300
The first energy level/orbital can hold up to _______ electrons.
What is 2?
300
This family of elements tend to not form bonds and have a very low reactivity.
What are noble gases?
300
This element gets its name from the Greek word for “green” and is used to make swimming pools look and smell the way they do.
What is chlorine?
400
Sodium metal violently reacts with water. This observation demonstrates this type of chemical property.
What is reactivity?
400
The scientist who coined the "plum pudding" or "raisin bun" model.
Who is Thomson?
400
Electrons exist in these specific energy levels.
What are orbitals?
400
This group of elements don't belong to a typical group on the periodic table and show properties of both metals and nonmetals.
What are metalloids?
400
This extremely poisonous metal is sometimes used throughout the world for dental fillings.
What is mercury?
500
A student observes that a piece of metal can be hammered into thin sheets without breaking. This physical property describes the metal's ability to be shaped in this way.
What is malleability?
500
When an electron gains energy and then returns to its original energy level, it releases this form of energy.
What is light?
500
The outer-most shell of electrons in a Bohr diagram.
What is valence shell?
500
This scientist was the first to organize and arrange the 63 known elements at the time. He also left "blanks" for unknown elements to be found or named later.
Who is Dmitri Mendeleev?
500
Scientists created an element so unstable that it can exist for only a tiny fraction of a second before breaking apart. Its name comes from the home country of its discoverers.
What is nihonium?
