Topic 2 - 2.4 - Ions and Isotopes

Question 1

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

Answer 1

negative charge? = gained an electron

positive charge? = lost an electron

Question 2

What are ISOTOPES?

Answer 2

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

Question 3

What is an ION? Why do they form?

Answer 3

• A charged atom or molecule.
• They form so the atoms can have a stable electron arrangement.
• Structure? - Ionic crystal lattice

Question 4

Why are IONS charged?

Answer 4

Because the number of electrons do not equal the number of protons in the atom or molecule.