Modern Chemistry Chapter 3

Front

What is the hyphen notation for Oxygen with atomic number 8 and mass number 16?

Back

Oxygen-16

Front

What are atoms of the same element that have different masses called?

Back

Isotopes

Front

Convert grams to atoms using the molar mass of an element. What is the relationship?

Back

Grams ➟ Atoms

Front

Convert atoms to grams using the molar mass of an element. What is the relationship?

Back

Atoms ➟ Grams

Front

Convert grams to moles using the molar mass of an element. What is the relationship?

Back

Grams ➟ Moles

Front

What is the definition of a mole in chemistry?

Back

A mole is a quantity that contains 6.022 x 10^23 particles (atoms, molecules, etc.).

Front

What is the molar mass of an element?

Back

The molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded together.

Front

What is the definition of isotopes?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

What is the significance of the atomic number?

Back

The atomic number indicates the number of protons in the nucleus of an atom, which determines the element's identity.