Types of Chemical Bonds

Types of Chemical Bonds

physical science

Losing electrons

• if an element LOSES electrons it is losing a negative

• losing a negative means it becomes MORE POSITIVE than it was

Gaining electrons

• if an atom GAINS electrons, it is adding a negative

• adding a negative means it becomes MORE NEGATIVE than it was

Multiple Choice

Calcium LOSES electrons. Calcium is now more ______ that it was before.

• positive

• negative

Multiple Choice

Fluorine GAINS electrons. Fluorine is now more _____ than it was before.

• positive

• negative

Cations v. Anions

• cations are formed when atoms LOSE electrons

• anions are formed when atoms GAIN electrons

Lithium fluoride

• lithium LOSES an electron, therefore it becomes a CATION

• fluorine GAINS an electron, making it the ANION

Multiple Choice

In the diagram, which element becomes the CATION?

• sodium (Na)

• chlorine (Cl)

Multiple Choice

In the diagram, which element becomes the ANION?

• sodium (Na)

• chlorine (Cl)

Multiple Choice

Ionic bonds form between which types of elements?

• metal + metal

• metal + nonmetal

• nonmetal + nonmetal

• metalloid + metal

Multiple Choice

Ionic bonds form when atoms gain and lose electrons.

• true

• false

Multiple Select

Select all of the ionic compounds:

• HF

• NaBr

• CaO

• K₂S

• CO₂

Multiple Choice

Covalent bonds form between which types of elements?

• metal + metal

• metal + nonmetal

• nonmetal + nonmetal

• metalloid + metal

Multiple Choice

Covalent bonds form when atoms share electrons.

• true

• false

Multiple Choice

If a covalent molecule has one end that is slightly more positive and one end that is slightly more negative, what type of molecule is it?

• polar molecule

• nonpolar molecule

Multiple Select

Select all of the covalent compounds:

• H₂O

• NO

• CaCl

• Na₂O

• CH₃COOH