January Welcome Back Review

Which of the following best describes the properties of ionic compounds?

• They have low melting points and are poor conductors of electricity.

• They have high melting points and conduct electricity when dissolved in water.

• They are malleable and ductile.

• They are soluble in non-polar solvents.

Which type of chemical bond involves the sharing of electron pairs between atoms?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

Tags

NGSS.HS-PS1-1

• Decomposition

• Single replacement

• Synthesis

• Combustion

A mixture contains sand, salt, and iron filings. Which method would best separate the components?

• Filtration followed by evaporation

• Magnetic separation followed by filtration and evaporation

• Distillation

• Chromatography

Which of the following ionic compounds is correctly named?

• NaCl - Sodium chloride

• KBr - Potassium bromide

• MgO - Magnesium oxide

• All of the above

Tags

NGSS.HS-PS1-7

Which type of bond is formed by the electrostatic attraction between oppositely charged ions?

• Covalent bond

• Ionic bond

• Metallic bond

• Van der Waals bond

Tags

NGSS.HS-PS1-3

• Synthesis

• Decomposition

• Single replacement

• Double replacement

Which of the following is a property of ionic compounds in their solid state?

• They are good conductors of electricity.

• They are brittle and do not conduct electricity.

• They are malleable and ductile.

• They are soluble in non-polar solvents.

Tags

NGSS.HS-PS1-3

Which type of bond is characterized by a sea of electrons?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond