AICE Semester 1 Review

What is the process called when water changes from a liquid to a gas?

• Freezing

• Condensation

• Evaporation

• Sublimation

According to the kinetic particle theory, what happens to the particles of a substance as it changes from solid to liquid?

• Particles move closer together

• Particles move further apart and gain energy

• Particles lose energy and move slower

• Particles remain in fixed positions

Which subatomic particles are found in the nucleus of an atom?

• Electrons and protons

• Neutrons and electrons

• Protons and neutrons

• Electrons only

What is the chemical formula for magnesium sulfate, a salt found in seawater?

• NaCl

• KCl

Which of the following best describes covalent bonding in a water molecule?

• Transfer of electrons between atoms

• Sharing of electron pairs between atoms

• Attraction between positive and negative ions

• Formation of hydrogen bonds

Identify the type of bonding in sodium chloride.

• Covalent bonding

• Metallic bonding

• Ionic bonding

• Hydrogen bonding

Which of the following is an example of a covalent molecule?

• NaCl

What is the main reason seawater is considered a mixture?

• It contains only one type of element

• It is composed of different elements and compounds

• It is a pure substance

• It contains only ionic compounds

What type of bond is formed due to the attraction between positive and negative ions?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

Which of the following substances is an ionic compound?

• NaCl