atoms & ions

Question 1

definition of an atom

Answer 1

Atom: The definition of an atom is the smallest component of an element, characterized by a sharing of the chemical properties of the element and a nucleus with neutrons, protons and electrons.

Question 2

definition of ion

Answer 2

Ion: an electrically charged atom or group of atoms formed by the loss or gain of one or more electrons, as a cation (positive ion), which is created by electron loss and is attracted to the cathode in electrolysis, or as an anion (negative ion), which is created by an electron gain and is attracted to the anode.

Question 3

2 important properties of subatomic particles

Answer 3

The 2 important properties of subatomic particles:
Mass
Electrical Charge

Question 4

2 types of ions

Answer 4

Element atoms contain equal numbers of protons and electrons and so have no overall charge.

Cations: A positively charged ion, i.e., one that would be attracted to the cathode in electrolysis

Anions: An anion is an ionic species having a negative charge.

Question 5

electrons description

Answer 5

Electrons:
Are very small & light
Exist in shells 
Can be lost or gained in chemical reactions
Exist in the shells of the atom
Negatively charged

Question 6

nucleus description

Answer 6

The Nucleus:
Dense
Contains all the mass of the atom in a tiny space
Made up of Protons and Neutrons
Has a positive charge because of the protons