Flashcard Moles, Ions, Isotopes, Nomenclature

Front

What subatomic particle is used to identify an atom and never changes?

Back

Protons

Front

What is the name of the compound P₄S₁₀?

Back

Tetraphosphorus decasulfide

Front

How do you calculate the number of moles in a sample?

Back

Use the formula: Moles = mass (g) / molar mass (g/mol).

Front

How many moles are in a 50.0 g sample of NaCl?

Back

0.857 mol NaCl

Front

What is the formula to find the number of neutrons in an atom?

Back

Number of Neutrons = Atomic Mass - Atomic Number.

Front

How many neutrons are in an atom with an atomic mass of 61 and atomic number of 29?

Back

32 neutrons.

Front

What is the charge of a proton?

Back

+1

Front

What is the charge of an electron?

Back

-1

Front

What is the charge of a neutron?

Back

0 (neutral)

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.