ATI Teas 7 Science Study Guide (Nurse Cheung) 289 Questions

1. Question: What are the changes between states of matter?
   Answer:

• Condensation: gas → liquid; gas molecules slow down and move closer together

• Evaporation: liquid → gas; liquid molecules gain enough energy to break away from the surface

• Sublimation: solid → gas; solid molecules gain enough energy to break away from the solid’s surface

• Deposition: gas → solid; gas molecules slow down and move closer together

• Melting: solid → liquid; solid molecules gain enough energy to move apart

• Freezing: liquid → solid; liquid molecules lose enough energy to stay together

2. Question: What is empirical evidence?
   Answer: Information gathered through observation and experimentation.

3. Question: What is qualitative evidence?
   Answer: Evidence described in terms of quality or characteristics.

4. Question: What is quantitative evidence?
   Answer: Evidence described in terms of quantity or amount.

5. Question: What is reliable evidence?
   Answer: Information that can be trusted and is consistent.

6. Question: What is valid evidence?
   Answer: Information that accurately represents what it is supposed to represent.

7. Question: What is a placebo?
   Answer: A harmless substance with no therapeutic effect.

8. Question: What is an independent variable?
   Answer: The variable being tested and not affected by other variables.

9. Question: What is a controlled variable?
   Answer: A variable not being tested that is kept constant.

10. Question: What are the steps of the scientific method?
    Answer:

1. Identify a problem or question

2. Gather information

3. Form a hypothesis (possible answer)

4. Design and conduct an experiment

5. Analyze data and draw conclusions

6. Communicate results