History
This gas, discovered by Joseph Priestley in 1774, is commonly used to breathe.
What is oxygen?
When hydrogen reacts with oxygen, this liquid is formed.
What is water?
The symbol Na stands for this element, used in table salt.
What is sodium?
This chemical, often added to water, helps prevent tooth decay.
What is fluoride?
This person was the previous president of LHS Chem Club.
Who is Ethan Min?
This Russian chemist is credited with creating the first periodic table in 1869.
Who is Dmitri Mendeleev?
This reaction, commonly occurring in plants, involves water, carbon dioxide, oxygen, and glucose.
What is photosynthesis?
The rows of the periodic table are called this.
Periods
This white powder is used in baking and also in some cleaning products.
What is baking soda (sodium bicarbonate)?
Dry ice is the solid form of this gas.
What is carbon dioxide?
Marie Curie and her husband Pierre discovered this radioactive element in 1898, named after Marie’s home country.
What is Polonium?
Vinegar and baking soda react to make this gas.
What is carbon dioxide?
These elements, found in Group 18, are colorless gases that hardly react with anything.
What are noble gases?
This gas, produced in the Haber process, is used to make fertilizers that help crops grow.
What is ammonia?
This is the only liquid metal at room temperature.
What is mercury?
The word “alchemy” comes from the Arabic al-kīmiyāʾ, which itself traces back to this ancient civilization’s word for “black land,” referring to their fertile soil.
What is Egypt?
In a redox reaction, the substance that loses electrons is said to be this.
What is oxidized?
This element, symbol W, has the highest melting point of all metals.
What is tungsten?
This type of chemical in chili peppers activates pain receptors, giving the “hot” sensation.
What is capsaicin?
This acid, found in car batteries, has the formula H₂SO₄.
What is sulfuric acid?
Who is Linus Pauling?
When hydrocarbons burn in oxygen, they produce water and carbon dioxide. In limited oxygen, this compound is produced instead of carbon dioxide.
What is carbon monoxide?
In 2016, four new elements were officially added to complete Period 7. Name one of them.
What is nihonium (Nh), moscovium (Mc), tennessine (Ts), or oganesson (Og)?
The process of turning milk into cheese relies on this type of chemical reaction, where proteins change shape and solidify.
What is coagulation?
The blue color of copper(II) sulfate crystals comes from this type of chemical species bound to the copper ion.
What is wate?