5 Fun Facts About Chemistry

Which chemist is largely credited with creating the first widely accepted version of the periodic table of elements?

Dmitri Mendeleev, a Russian chemist, is credited with creating the first widely accepted version of the periodic table in 1869. He arranged the elements by atomic weight and predicted the properties of undiscovered elements.

Beyond solid, liquid, and gas, what is often considered the fourth state of matter?

Plasma is often called the fourth state of matter, distinct from solids, liquids, and gases. It consists of an ionized gas with free electrons and positive ions, making it electrically conductive.

What type of chemical reaction absorbs heat energy from its surroundings?

Endothermic reactions absorb heat energy from their surroundings, causing the temperature of the surroundings to drop and often feeling cold to the touch.

Which element, with atomic number 1, is the lightest on the periodic table?

Hydrogen, with atomic number 1, is the lightest and most abundant chemical element in the universe, consisting of a single proton and typically one electron.

What subatomic particle found in the nucleus of an atom carries a positive electric charge?

Protons are stable subatomic particles found in the nucleus of an atom, carrying a positive electric charge.