Unit 6 review

What is the force of attraction between the atoms of elements in a compound?

• a diatomic element

• a chemical bond

• a crystal

• an ion

Tags

NGSS.HS-PS1-3

Which elements tend to lose electrons when bonding?

• metals

• Nonmetals

• Metalloids

• noble gases

Strontium is an element with 2 valence electrons. What will be its valence number?

• -2

• +2

• -6

• +6

What is the smallest part of a covalently bonded compound called?

• ion

• isotope

• atom

• molecule

Tags

NGSS.MS-PS1-1

What is an atom with a positive or negative charge called?

• isotope

• ion

• atom

• molecule

Which of the following is a polyatomic ion?

• F₂

• MgCl₂

• K⁺¹

• SO₄^-2

What must be the sum of all the valence numbers in a stable compound?

• 0

• 1

• 2

• 8

Tags

NGSS.MS-PS1-1

What type of bonding results in crystal formation?

• ionic

• covalent

• metallic

• polar

Which type of atoms usually become negative ions?

• metals

• nonmetals

• metalloids

• noble gases

What typed of bonding involves positive ions in a "sea of electrons"?

• ionic

• covalent

• metallic

• nonpolar