Lecture 1.2 Review Questions

The following is a(n) ______________________.

• Atom

• Molecule

• Compound

• Element

The following is a(n) ______________________.

• Atom

• Molecule

• Compound

• Element

The following is a(n) ______________________.

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

The following is a(n) ______________________.

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

The following could be separated by ______________ means.

• Chemical

• Physical

The following could be separated by ______________ means.

• Chemical

• Physical

Molecules in liquid form have more kinetic energy than molecules in solid form.

• True
• False

Gases have fixed volume.

• True
• False

Solids are more disordered than gases.

• True
• False

Which of the following is a physical change?

• Ethanol evaporating off of sanitized hands

• Cotton (C₆H₁₀O₅) reacting with oxygen gas to produce water and CO₂

• A popsicle melting when eaten in summer

• Hair changing color when dyed.