Physical Science Semester I Final Exam 2024

First name

Last name

Long hair in a laboratory should be kept (a)  

• tied back
• cut short
• held away from the experiment with
• always neatly groomed

2. How much protection do personal eyeglasses provide?

• a face shield
• safety glasses
• splashproof chemical googles
• none of the above

3. Which time of the day was the temperature approximately 5 degree Celsius?

• 9:00 AM
• 10:00 AM
• 11:00 AM
• 12:00 PM

The temperature was the same at two times of day: (a)   .

• 7:00 AM and 7:00 PM
• 7:00 AM and 10:00 PM
• 10:00 AM and 7:00 PM
• 10:00 AM and 10:00 PM

5. Which two years did the sample contain the same number of pennies?

• 1988 and 1992
• 1988 and 1991
• 1994 and 1997
• 1994 and 1998

6. Which year was the smallest number of pennies found.

• 1988
• 1989
• 1990
• 1991

Match the following gases with their abundance in the atmosphere.

• Least abundant gas in the atmosphere

• hydrogen

• Most abundant gas in the atmosphere

• oxygen

• Second most abundant gas in the atmosphere

• nitrogen

• Fourth most abundant gas in the atmosphere

• carbon dioxide

8. What percentage best represents the proportion of oxygen gas in the atmosphere?

• 1%
• 4%
• 20%
• 75%