Topic 2 - 2.4 - Ions and Isotopes

Question 1

What is the difference between ISOTOPES and IONS?

Answer 1

• ISOTOPES have the same proton number but different neutron number
• IONS are atoms that have lost or gained electrons

Question 2

What is a Hallide Ion?

Answer 2

Halogen atom with a negative charge.

Question 3

Explain what it means if an atom becomes:
- NEGATIVLEY charged
- POSITIVLEY charged

Answer 3

negative charge? = gained an electron

positive charge? = lost an electron

Question 4

What are ISOTOPES?

Answer 4

Atoms of an element with the same atomic number (proton num.) , but different mass numbers (neutron num.)

Question 5

What is an ION? Why do they form?

Answer 5

• A charged atom or molecule.
• They form so the atoms can have a stable electron arrangement. Their arrangement is called an ionic crystal lattice(3D).

Question 6

Why are IONS charged?

Answer 6

They are charged because the number of electrons do not equal the number of protons in the atom or molecule.