Molecules Concepts

What is the smallest unit of matter that still has the properties of an element?

• Atom
• Molecule
• Compound
• Ion

When two or more atoms bond together, what do they form?

• Compound
• Element
• Molecule
• Mixture

Tags

NGSS.MS-PS1-1

What type of force holds atoms together in a molecule?

• Friction
• Bond
• Gravity
• Pressure

Which of the following has a positive or negative charge?

• Atom
• Ion
• Molecule
• Compound

An ionic bond forms when:

• Two atoms share electrons
• One atom transfers electrons to another
• Two atoms form a molecule
• Atoms split apart

Tags

NGSS.HS-PS1-2

A covalent bond forms when:

• Atoms transfer electrons
• Atoms share electrons
• Atoms lose energy
• Atoms collide

Tags

NGSS.HS-PS1-1

A metallic bond is best described as:

• Atoms sharing a sea of electrons
• Atoms forming magnetic poles
• Ions attracting oppositely
• Atoms losing all electrons

Which type of bond involves equal sharing of electrons?

• Ionic
• Polar
• Nonpolar
• Metallic

Which term describes unequal sharing of electrons within a molecule?

• Ionic
• Polar
• Covalent
• Nonpolar

What does electronegativity measure?

• How strongly an atom attracts electrons
• The size of an atom
• The number of protons
• The number of neutrons

Tags

NGSS.HS-PS1-2