General Biology
The vertical columns in the periodic table are called _____, whereas the horizontal rows are referred to as _____.
Which of the following is a true statement regarding the atomic number of an element?
____ is required for the synthesis of thyroxine, whereas ____ is required for the synthesis of hemoglobin.
Which one of the following changes when you change the number of neutrons in the nucleus of an element?
The smallest particle of a pure substance that may or may not exist independently is termed :
Which of these subatomic particles has a negative charge?
Which of the following appropriately represents the subatomic particles in the given image of an atom?
Identify which of the following molecules is nonsensical (Hint: Draw Lewis dot structures and then predict).
Which of the following represents the correct Lewis dot structure of the following molecule:
Which one of the following pairs will contain the same number of molecules?
Noble gases have full electron shells, while halogens readily gain an electron to fill their outermost shell. Which of the following statements is therefore true?
Select the correct term for elements that are rarely found on the earth
