Phases - Part 1 Quiz Review

Which of the following changes is exothermic?

• sublimation of iodine

• vaporization of ethanol

• freezing of water

• melting of iron

Two samples of gold that have different temperatures are placed in contact with one another. Heat will flow spontaneously from a sample of gold at 60°C to a sample of gold that has a temperature of

• 60°C

• 80°C

• 50°C

• 70°C

Tags

NGSS.HS-PS3-4

At 1 atmosphere and 298 K, 1 mole of H₂O(l) molecules and 1 mole of C₂H₅OH(l) molecules both have the same

• vapor pressure

• average kinetic energy

• density

• mass

Which kelvin temperature is equivalent to -24°C?

• 297 K

• 249 K

• 273 K

• 226 K

Which grouping of the three phases of bromine is listed in order from left to right for increasing distance between bromine molecules?

• A) solid, liquid, gas

• B) solid, gas, liquid

• C) gas, liquid, solid

• D) liquid, solid, gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which 5.0-milliliter sample of NH₃ will take the shape of and completely fill a closed 100.0-milliliter container?

• NH₃(aq)

• NH₃(l)

• NH₃(g)

• NH₃(s)

Tags

NGSS.MS-PS1-4

At 101.3 kPa and 298 K, which element could this diagram represent?

• Ag

• Kr

• Rn

• Xe

Tags

NGSS.HS-PS1-1

In which material are the particles arranged in a regular geometric pattern?

• CO₂(g)

• NaCl(aq)

• C₁₂H₂₂O₁₁(s)

• H₂O(l)

In which equation does the term 'heat' represent heat of fusion?

• H₂O(l) + HCl(g) → H₃O⁺(aq) + Cl^-(aq) + heat

• H₂O(l) + heat → H₂O(g)

• NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l) + heat

• NaCl(s) + heat → NaCl(l)

As ice melts at standard pressure, its temperature remains at 0°C until it has completely melted. Its potential energy

• remains the same

• decreases

• increases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4