Chemistry Chapter 3

Question 1

What is atomic mass

Answer 1

Atomic mass is the total of the masses of the electrons, neutrons, and protons in an atom, or in a group of atoms, the average mass.

Question 2

Ions

Answer 2

An ion is defined as an atom or molecule which has gained or lost one or more of its valence electrons, giving it a net positive or negative charge.

Question 2

Ions

Answer 2

An ion is defined as an atom or molecule which has gained or lost one or more of its valence electrons, giving it a net positive or negative charge.

Question 3

Negative and positive ions

Answer 3

anion and cation

Question 4

Compounds

Answer 4

When two or more elements chemically combine in a fixed ratio by mass, the obtained product is known as a compound.

Compounds are substances consisting of two or more different types of elements in a fixed ratio of its atoms.

Question 5

Why is it called atomic mass

Answer 5

The mass of an atomic particle is called the atomic mass.

Question 6

How is atomic mass commonly expressed as?

Answer 6

This is commonly expressed as per the international agreement in terms of a unified atomic mass unit (AMU).

Question 7

Best define atomic mass

Answer 7

It can be best defined as 1/12 of the mass of a carbon-12 atom in its ground state.