IONS & ISOTOPES

Question 1

A positively charged ion forms
when atom loses electron/s
\_\_\_\_\_. It has fewer electrons
than protons.
Examples: Li+
, Sr2+
, Al3+
Number of e- = p+ ⎼ charge

Answer 1

cation

Question 2

A _______ is an ion formed from a
single atom. It is a single atom that has
a different number of protons and
electrons.

Answer 2

monatomic ion

Question 3

A negatively charged ion forms
when atom gains electron/s
\_\_\_\_\_. It has more electrons
than protons.
Examples: F-
, S2-
, N3-

Answer 3

anion

Question 4

A ________ is an ion composed of

more than one atom

Answer 4

polyatomic ion

Question 5

Atoms that have the same number of
protons but different number of neutrons
are called

Answer 5

isotopes.

Question 6

• _____ are variants of a particular
  element.
• Many elements have multiple ________. To
  identify ________, chemist add a number
  after the element’s name (mass number).
• Specific _______ have many applications,
  particularly in medical testing, imaging,
  and treatment.

Answer 6

isotopes

Question 7

The average mass of
of an element’s atoms
is called the \_\_\_\_\_\_\_. This is the one
reflected in the
periodic table of
elements.

Answer 7

ATOMIC MASS

Question 8

When an atom loses or gains one
or more electrons, it requires a net
electrical charge and is called

Answer 8

ion