Ions and Ionic Bonding only for y10

Ions are charged particles, formed when atoms...

• gain or lose neutrons

• keep the same number of electrons

• lose protons

• gain OR lose electrons

Ions are _______ particles. (1 word, take care with spelling)

Ions gain or lose electrons in order to get a ____ outer shell. (1 word only, careful with spelling)

The number of electrons lost or gained is the same as the ______ on the ion.

• charge

• atomic number

• mass number

• table number

If 2 electrons are lost, the ion now has 2 more positive protons than negative electrons, so the charge is...

• 2+

• 2-

• 1+

• 1-

If 3 electrons are gained, the particle now has 3 more electrons than protons, so the charge is...

• 2+

• 2-

• 3+

• 3-

Match the following elements with the amount of electrons lost or gained:

• loses 1 electron

• Magnesium (Group 2

• gains 2 electrons

• Chlorine

  (Group 7)

• gains 1 electron

• Sodium

  (Group 1)

• loses 2 electrons

• Oxygen

  (Group 6)

______ and non-metals can react together forming ions.

When metals react with non-metals: (match the correct statements)

• an ionic compound.

• The non-metal atoms

• lose electrons forming positively charged ions.

• The metal atoms

• gain electrons forming negatively charged ions.

• This strong attraction is called

• an ionic bond.

• These oppositely charged ions are strongly attracted to each other

• by electrostatic forces.

• ions held together by an ionic bond are called

In a dot and cross diagram, each dot or cross represents..

• 1 neutron.

• 1 proton.

• 1 electron.

Tags

NGSS.MS-PS1-1