________ molecules are found in nature as single atom elements

• polyatomic
• monatomic
• elemental
• diatomic

______ molecules are found in nature as pairs of two atoms of the same type covalently bonded together.

• Diatomic

• Monatomic

• Polyatomic

• Network

Which of the following types of elements can exist in monatomic form?

• alkali metals

• transition metals

• halogens

• noble gases

Tags

NGSS.HS-PS1-1

Which of the following types of elements can exist in nature as diatomic molecules?

• alkali metals

• transition metals

• halogens

• noble gases.

Tags

NGSS.HS-PS1-2

Why do bonds form?

• To fill the valence shell of electrons for the elements involved
• to release energy stored in the bonds
• because whenever you mix two chemicals, there will be a reaction
• because of attraction

Tags

NGSS.HS-PS1-4

A substance which has a high melting point, conducts electricity when dissolved in water, and has a crystalline structure probably has what type of bond?

• Ionic
• Metallic
• Covalent
• Crystalline

Tags

NGSS.HS-PS1-3

What type of bond is illustrated above?

• Metallic
• Ionic
• Covalent
• Wiggly

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

A solid substance is an excellent conductor of electricity. The chemical bonds in this substance are most likely?

• ionic, because the valence electrons are shared between atoms
• covalent, because the valence electrons are mobile
• metallic, because the valence electrons are stationary
• metallic, because the valence electrons are mobile

Tags

NGSS.HS-PS1-3

A mixture of two or elements at least one of which is a metal is called

• an ion

• an alloy

• steel

• a crystal

Bonds formed by transferring electrons from one atom to another are

• ionic

• metallic

• non polar covalent

• covalent

Tags

NGSS.HS-PS1-3