CHEMISTRY SEMESTER B TEST SCRIPT 2026
QUESTIONS ANSWERS GRADED A+
◉ 5 safety precautions to keep in mind when using a Bunsen burner.
Answer: -Keep all flammables away from the burner.
-Don't leave the burner unattended.
-Don't allow gas to leak into the room.
-Don't unscrew the gas valve all the way.
-Always wear goggles and apron.
◉ 3 ingredients required to make a fire (thinking about using a
Bunsen burner). Answer: -Fuel
-Oxygen
-Energy
◉ How do you read a graduated cylinder? Answer: First you
determine the value of the graduations, then you read between the
lines at the bottom of the meniscus, and the last digit is estimated
◉ Where is the hottest part of the Bunsen burner flame? Answer:
The tip of the inner blue cone is the hottest part of the flame
, ◉ Name 3 lab accidents where you should take care of the problem
first. Answer: -If you get chemicals on your skin, you should rinse it
off immediately.
-If hair or clothing catches fire, use the fire blanket to extinguish the
flame.
-If you get chemicals in your eyes, go to the chemical eye wash
station immediately.
◉ Name 6 safety precautions to keep in mind when working with
chemicals. Answer: -Wear safety goggles and an apron.
-Inform Mr. Wagner before cleaning up spills.
-If chemicals contact your skin, rinse immediately then inform Mr.
Wagner.
-Don't use flammable chemicals and open flames at the same time.
-Wash your hands when you're done.
-Don't ingest chemicals.
◉ List 5 ways that chemicals are dangerous and define each.
Answer: -Corrosive = destroys living tissue and objects.
-Flammable = can be easily ignited.
-Toxic = poisonous to living things.
-Reactive = may react to make more dangerous chemicals.
-Explosive = capable of quickly releasing large amounts of energy.
QUESTIONS ANSWERS GRADED A+
◉ 5 safety precautions to keep in mind when using a Bunsen burner.
Answer: -Keep all flammables away from the burner.
-Don't leave the burner unattended.
-Don't allow gas to leak into the room.
-Don't unscrew the gas valve all the way.
-Always wear goggles and apron.
◉ 3 ingredients required to make a fire (thinking about using a
Bunsen burner). Answer: -Fuel
-Oxygen
-Energy
◉ How do you read a graduated cylinder? Answer: First you
determine the value of the graduations, then you read between the
lines at the bottom of the meniscus, and the last digit is estimated
◉ Where is the hottest part of the Bunsen burner flame? Answer:
The tip of the inner blue cone is the hottest part of the flame
, ◉ Name 3 lab accidents where you should take care of the problem
first. Answer: -If you get chemicals on your skin, you should rinse it
off immediately.
-If hair or clothing catches fire, use the fire blanket to extinguish the
flame.
-If you get chemicals in your eyes, go to the chemical eye wash
station immediately.
◉ Name 6 safety precautions to keep in mind when working with
chemicals. Answer: -Wear safety goggles and an apron.
-Inform Mr. Wagner before cleaning up spills.
-If chemicals contact your skin, rinse immediately then inform Mr.
Wagner.
-Don't use flammable chemicals and open flames at the same time.
-Wash your hands when you're done.
-Don't ingest chemicals.
◉ List 5 ways that chemicals are dangerous and define each.
Answer: -Corrosive = destroys living tissue and objects.
-Flammable = can be easily ignited.
-Toxic = poisonous to living things.
-Reactive = may react to make more dangerous chemicals.
-Explosive = capable of quickly releasing large amounts of energy.
