It is the mass of an atom expressed in atomic mass unit (amu).

• atomic mass

• atomic mass unit

• isotopes

• compound

The mass of an atom relative to the mass of Carbon-12 atom.

• atomic mass

• atomic mass unit

• isotopes

• compound

The atomic mass of an atom found in the periodic table is the average of the masses of the known ...

• atomic mass

• atomic mass unit

• isotopes

• compound

Elements in a ________ are present in fixed ratios.

• atomic mass

• atomic mass unit

• isotopes

• compound

What is the he smallest part of an element that can take part in a chemical reaction?

• atomic mass

• atomic mass unit

• atom

• compound

The percentage (%) value of the number of isotopes available in nature for a given element.

• molecular mass

• mole

• % Abundance

• Relative Atomic Mass

The 'counting unit' used by chemists to show the number of atoms, ions or molecules present in a particular chemical sample.

• molecular mass

• mole

• % Abundance

• Relative Atomic Mass

The sum of the masses of its atomic components.

• molecular mass

• mole

• % Abundance

• Relative Atomic Mass

The average mass per atom of the naturally occurring forms of an element to 1/12^th the mass of an atom of Carbon-12.

• Molecular mass

• Mole

• % Abundance

• Relative Atomic Mass

The equivalent value for the number of atoms or molecules in 1 mole of a substance.

• Molecular mass

• Mole

• 6.02 x 10²³

• Relative Atomic Mass