Chemistry definitions Flashcards
What is relative mass?
Relative mass is the average mass of the element, taking into account of isotopes which are naturally occurring in the sample of element.
What are isotopes?
isotopes are the same types of elements with same number of protons but different mass number.
When do aqueous form?
Aqueous form when something dissolved in water, they are solution and transparent.
What is relative atomic mass?
Relative atomic mass of element is weight average mass of the isotopes of the element measured on scale of where carbon 12 has mass of exactly 12.
How much g is in 1 amu?
1 amu = 1.67 x 10^-24 g
What is empirical formula?
Empirical formula shows the simplest whole number ratio of atoms present in the compound.
What is molecular formula?
Molecular formula shows the actual number of atoms of each element present in the molecules of the compound.
What are anhydrous salt and crystals?
Anhydrous salt are salt with no water involved and hydrate salts tend to be crystals.
What is water of crystallization?
Water of crystallization is when some substances crystallize from solution, water become chemically bond up with the salt, forming hydrated salt (crystals).
When do crystals form?
Crystals form when salt chemically bond up with water
