Compounds composed of a ______________ and _____________ like the compound CaCl₂ , are ionic compounds.

• metal ... metal

• nonmetal ... nonmetal

• metal ... nonmetal

Tags

NGSS.HS-PS1-2

What property is describing an ionic compound?

• shares electrons

• high melting point

• weak bonds

• made up of nonmetals.

Tags

NGSS.HS-PS1-3

Which of the following is NOT TRUE about covalent compounds?

• They have low melting and boiling points.

• They are formed from 2 nonmetals.

• They can conduct electricity when dissolved in water (aqueous).

The following properties are all characteristics of ionic compounds EXCEPT

• high melting and boiling points

• soft

• crystal lattice structure

• conduct electricity when dissolved in water

Tags

NGSS.HS-PS1-3

In what form can an ionic compound conduct electricity?

• when dissolved in water
• as a solid
• as a crystal
• when warmed slightly

What is the name of the three-dimensional pattern that forms when ions bond?

• a crystal lattice

• a chemical compound

• an ionic bond

• an ionic chalice

Tags

NGSS.HS-PS1-3

Which of the following describes covalent bonds?

• Bonds form because of opposite charges

• electrons are shared to fill outer electron shells

• Electrons are transferred between atoms

• Covalent bonds are magical

Tags

NGSS.HS-PS1-2

Ionic compounds conduct electricity when dissolved in water. Which statement below best explains the property?

• Ions are free to move.

• Electrons are free to move.

• Bonds are strong.

• There are weak intermolecular forces of attraction.

Properties of covalent compounds include:

• brittle, conducts electricity (aqueous state), high melting points

• usually gas or liquid, relatively low melting points, do not conduct electricity

• shiny, malleable, ductile, conducts electricity, usually a solid

Tags

NGSS.HS-PS1-1

What type of forces act between the ions in an ionic compound?

• Electrostatic

• Frictional

• Gravitational

• Magnetic

Tags

NGSS.HS-PS1-3