June 2021

How was francium discovered? Francium was finally discovered in 1939 by Marguerite Perey at the Curie Institute in Paris. She had purified a sample of actinium free of all its known radioactive impurities and...

What does the period an element is in tell you? The period number on the Periodic table tells you the total number of orbits that the atom will have. In other words, the period...

How can you tell the difference between metals and nonmetals on the periodic table? The metals are to the left of the line (except for hydrogen, which is a nonmetal), the nonmetals are to...

Can I print on sugar paper? The best results are achieved by printing onto the smooth side. The Wafer Card is smooth on both sides. EPS Icing sheets have been specifically engineered for edible...

How long does withdrawal symptoms last? The duration of physical withdrawal is typically three to five days; however, emotional withdrawal can be much longer. Some symptoms can be present for many months. Withdrawal symptoms...

Is Ethanoate polar? The ethyl acetate molecule, with the simplified formula C4 H8 O2 , is a polar solvent. Is ethyl Ethanoate and ethyl acetate the same? Ethyl acetate, also known as ethyl ethanoate...

Why is phosphorus used in matches? Friction on the ignition surface: If the match is struck against the striking surface, the friction causes the match to heat up. A small amount of the red...

How many countries produce oil in the world? About 100 countries produce crude oil. However, in 2020, five countries accounted for about 50% of the world’s total crude oil production. Is Australia an oil...

What is nuclear energy and how is it used? Nuclear energy can be used to create electricity, but it must first be released from the atom. In the process of nuclear fission, atoms are...

Is barium a metal or nonmetal? Barium is a naturally occurring alkaline metalloid element with atomic symbol Ba, atomic number 56, and atomic weight 137 that is only found in combination with other elements,...