ACT Aspire Practice 1

Assume that water undergoes a phase change to a gas. Which of the following statements would be true?

• The attractive intermolecular forces of the escaping molecules are weak.

• The average kinetic energy of the water remains the same.

• The rate of movement of the gas molecules decreases.

• The gas will undergo no further phase changes.

Suppose a third sample of water is heated to a higher temperature than Sample 2. It is then found that a greater number of molecules escaped the liquid in Sample 3 than in Sample 2. Would these results be consistent with the

results depicted in Figure 1 ?

• Yes, an increase in temperature leads to a decrease in the number of escaping molecules in the liquid.

• Yes, as the temperature increases, it leads to more molecules escaping the liquid.

• No, the temperature reading of Sample 2 would be five times as high as that of the third sample.

• No, the average kinetic energy of the water will decrease.

It can be inferred from the passage that when a substance undergoes a phase change from a liquid to a gas it will:

• evaporate.

• condense.

• disintegrate.

• remain the same.

Given the samples at T1 and T2, and the kinetic energies measured and shown in Figure 1, which temperature produces the highest single kinetic energy measurement?

• Both T1 and T2

• T2

• T1

• Neither T1 nor T2

CRITICALLY EXAMINE EACH OF THE FACTS

• ANALYZE
• JUSTIFY
• DIAGRAM
• ESTIMATE

SHOW HOW THE FACTS OR IDEAS ARE SIMILAR

• SUMMARIZE
• EQUIVALENT
• COMPARE
• DIMENSION

SHOW HOW THE FACTS OR IDEAS ARE DIFFERENT

• OPINION
• ACCURATE
• CONTRAST
• ELIMINATE

DETERMINE THE VALUE, SIGNIFICANCE, OR WORTH OF

• MEAN
• JUSTIFY
• DISTINGUISH
• EVALUATE

MAKE CLEAR BY CITING EXAMPLES, DRAWING A PICTURE, ETC.

• LEAST
• ESTIMATE
• ILLUSTRATE
• SEQUENCE

DRAW A CONCLUSION BASED ON GIVEN FACTS; PREDICT, GENERALIZE

• EFFECT
• REVISE
• INDICATION
• INFER