Basic chemistry & The Periodic Table
Electromagnetic Spectrum & Solar Radiation
Carbon & Climate
Water & Chemical Bonding
Pot Pourri
100

Residing in the nucleus of an atom, this subatomic particle is positively charged. 

What is a proton? 

100

These types of waves travel at the speed of light. 

What are electromagnetic waves? 

100
This category of gases are capable of absorbing and emitting infrared radiation, thus warming the atmosphere. 

What are greenhouse gases? 

100

An electron in the outer shell of an atom that can form chemical bonds with other atoms. 

What is a valence electron? 

100

This pigment comes in two forms and can protect the skin from UV damage by absorbing UV photons. 

What is melanin? 

200

This property of a substance can be observed without changing the substance into something else. 

What is a physical property?

200

This layer of our atmosphere is responsible for absorbing a large amount of UV radiation.  

What is the ozone layer?

200

This natural formation is used in combination with spectroscopy techniques to measure the composition of Earth's atmosphere many millennia in the past. 

What are ice cores?

200

This type of bond is formed when electrons from different atoms are shared. 

What are covalent bonds?

200
This pollutant binds to hemoglobin in our blood more efficiently than oxygen and overexposure can lead to death. It is an odorless, colorless gas often called the "silent killer". 

What is carbon monoxide? 

300

This atomic property is determined by adding the number of protons and neutrons together. 

What is atomic mass? 

300

This type of electromagnetic radiation cannot be seen by humans but can be felt as heat. 

What is infrared radiation? 

300

This type of radiative forcing exerts a cooling effect. 

What are negative forcings? 

300

This value increases up and to the right of the periodic table, and is a measure of how much an atom attracts electrons in any given chemical bond. 

What is electronegativity? 

300

This value is determined by the concentration of H+ ions in a solution. 

What is pH? 

400

This group of the periodic table primarily contains highly reactive metals, with the exception of hydrogen, and occupies the leftmost column of the periodic table. 

What are alkali metals? 

400

This type of sunscreen protects the skin from UV rays by reflecting the rays and blocking them from reaching skin cells. 

What is mineral sunscreen?

400
Earlier blooming of cherry blossoms is an example of this kind of adaptation/change that organisms undergo in order to adapt to climate change. 

What are phenological changes? 

400

This intermolecular force contributes majorly to water's unique properties, and is formed as a result of partial positive and partial negative charges between polar covalent bonds. 

What are hydrogen bonds?

400

First synthesized in the 1930s and later banned, these compounds are responsible for depletion of the ozone layer. 

What are chlorofluorocarbons?

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