Y7 Chem BT 7_4 Ionic and covalent bonds 02

Group 18 have ......... valence electrons

• 18

• 8

• 0

• .

A .............. bond is a force of attraction between atoms

• mechanical

• chemical

• physical

• .

Non metal atoms .............. electrons to form anions

............can form covalent bonds with non metal atoms from group 14, 15 16 and 17

• magnesium

• sodium

• hydrogen

• .

.................. compound form positive or negative charged ions

• Ionic

• covalent

• metalic

• .

Transfer of electrons form ....

• .

• chemical compounds

• chemical food

• chemical water

Transfer of electrons form .... between 2 non metal atoms

• marriage bond

• water bond

• covalent bond

• ionic bond

Xenon is an unreactive group 18 elements

• .

• False

• TRUE

• .

Neon is an unreactive group 18 elements

• .

• False

• TRUE

• .

Helium is an unreactive group 18 elements

• .

• False

• TRUE

• .