Unit 1 Review part 1

What phase change is occurring here?

• Condensation

• Melting

• Freezing

• Vaporization

What phase change is occurring here?

• sublimation

• vaporization

• Condensation

• Deposition

What phase change is occurring here?

• Condensation

• Sublimation

• Vaporization

• Melting

Which of these states of matter will have the most random particle arrangement?

• liquid

• gas

• solid

Which of these states of matter will have the most particle attraction?

• liquid

• gas

• solid

Vaporization will _____________ particle attraction

• Increase

• Decrease

Melting will _____________ particle attraction

• Increase

• Decrease

Condensation will _____________ particle attraction

• Increase

• Decrease

A substance has an initial temperature of 0 degrees Celsius and 1 atm. The pressure is decreased to 0.25 atm. What phase change occurred?

• Vaporization

• Melting

• Condensation

• sublimation

What is the measurement of this object?

• 1.0 because we round to the nearest whole number

• 1.3 because that is the closest we can measure

• 1.4 because that is the closest we can measure

• 1.35 because we include the estimated (or uncertain) digit that we read.