Chapter 3 Chemical bonding

Which of the following elements are metal elements?

• sodium, Na

• aluminium, Al

• chlorine, Cl

• oxygen, O

Tags

NGSS.HS-PS1-1

Which one the following substances is ionic compound?

• carbon monoxide, CO

• water, H₂O

• lithium oxide, Li₂O

• oxygen gas, O₂

Tags

NGSS.HS-PS1-3

Non-metal elements always _______ electrons to form negative ions.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Positive ion is also called __________.

• anion

• cation

• dogion

Choose the typical properties of ionic compounds.

• hard and brittle

• high melting point and boiling point

• solid at room temperature

• conduct electricity when dissolve in water

Ionic bonding involves electron transfer.

Covalent bonding involves electron _____________.

Choose the typical properties of simple covalent compounds.

• volatile

• high melting point and boiling point

• gas or liquid at room temperature

• conduct electricity

Which of the following elements are non-metal elements?

• sodium, Na

• aluminium, Al

• chlorine, Cl

• oxygen, O

Which one the following substances is covalent compound?

• carbon monoxide, CO

• limestone, CaCO₃

• lithium oxide, Li₂O

• Magnesium oxide, MgO

Negative ion is also called __________.

• anion

• cation

• dogion