Ionic Compounds

Ions are formed when atoms...

• lose or gain electrons

• lose electrons

• gain electrons

• gain neutrons

Tags

NGSS.HS-PS1-2

Ions are formed because atoms want to obtain the stable arrangement of a noble gas.

• True

• False

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In general, metal atoms lose electrons forming _____ ions, non-metal atoms gain electrons forming _____ ions.

• negative, positive

• negative, negative

• positive, negative

• positive, positive

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Ionic bonds are the _____ between positive and negative ions.

• covalent bonds

• metallic bonds

• polar bonds

• electrostatic attraction

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

Ionic compounds form _____

• ionic molecules

• ionic lattice

• metallic lattice

• covalent networks

Tags

NGSS.HS-PS1-3

Ionic compounds have ____ melting points and _____ boiling points because _____ ionic bonds must be broken in order to break the lattice.

• low, low, weak

• low, high, weak

• low, high, strong

• high, high, strong

Tags

NGSS.HS-PS1-3

Many ionic compounds are soluble in water.

• True

• False

Tags

NGSS.HS-ESS2-5

When ionic compounds dissolve, the lattice structure remains intact.

• True

• False

Ionic compounds always conduct electricity - whether they are in the solid, liquid or gas form.

• True

• False

Ionic compounds conduct electricity only when molten or in a solution because...

• electrons are free to move

• water is free to move

• molecules are free to move

• ions are free to move