Chem 219 Lab Exams 5 To 8 Questions And Solutions

CHEM 219 LAB EXAMS 5 TO 8 QUESTIONS
AND SOLUTIONS


◉ How do you smell chemicals?.
Answer: Use the Wafting technique


◉ Always pour acids into _______.
Answer: Water


◉ Always pour ______ into Water.
Answer: Acids


◉ Blue Diamond.
Answer: Health Rating


◉ Yellow Diamond.
Answer: Reactivity Rating


◉ Red Diamond.
Answer: Flammability Rating

,◉ White Diamond.
Answer: Notes special hazards, such as radioactivity


◉ What should you do if a spill occurs?.
Answer: Inform the teacher and refer to the SDS


◉ How will you typically dispose of chemicals?.
Answer: Pour them down the drain followed by copious amounts of
water, making sure all acidic or basic solutions are neutralized
before doing so.


◉ Neutralization Reaction.
Answer: When an acid and a base react to form water and salt


◉ What should you do if you spill something on yourself?.
Answer: Remove all clothing while under a shower, or rinse with
cold water and soap


◉ What should be done in the case of an acid spill?.
Answer: Put baking soda on it


◉ What should be done in the case of a base spill?.

, Answer: Put vinegar on it


◉ Name two Subatomic Particles.
Answer: Protons and Neutrons


◉ Protons.
Answer: +1 charge, slightly heavier


◉ Neutrons.
Answer: +0 charge, slightly lighter


◉ Strong Force.
Answer: The glue that holds the nucleus of an atom together, much
stronger than Electrostatic Force, can only be split by Fission


◉ Fission Reactions.
Answer: The splitting of proton and neutrons in a nucleus


◉ Mass Number.
Answer: Sum of Protons and Neutrons


◉ Isotopes.