A reaction where one element replaces another in a compound is called a

Lithium (atomic number - 3), Sodium (atomic number - 11) and Potassium (atomic number - 19) are in the same group in the periodic table with valence electron 1, but potassium seems to be more reactive than sodium and lithium. Why?

In a classroom which comparison would a teacher most likely use for describing a mole

Is a flame test of an element a chemical or physical change?

What is purpose of lotion testing?

Which of the following is a chemical property of water at 4 c

What causes the centripetal accleeration of an electron in a hydrogen atom?

Write a word equation for the extraction of tin from tin oxide using carbon

What is the electron configuration for neon?

Whats a pure substance that can not be broken down into any other substances?

Does the moon's shadow change relative to the sun