Chem100 Safety Quiz: Working With Chemicals 6

CHEM 100 LEC/LAB

How Should All Chemicals in the Laboratory Be Treated?

As though they are hazardous

Can You Touch, Eat, or Smell Chemicals freely in the Lab?

No, only when instructed; if smelling, fan the air toward your nose, do not sniff directly

Should You Touch Your Face, Eyes, or Mouth while in the Lab?

No; if necessary, wash your hands first

How Should Chemical Containers Be Held?

Away from the body

What Should You Check before Using a Chemical?

The label to ensure the correct chemical and concentration

How Can You Avoid Contaminating Solid Chemicals?

Never put a spatula in the bottle; pour solids directly into your container by tilting the bottle and rotating it

What Should You Do if a Solid Chemical is Tightly Packed?

Close the container and gently tap the bottle to loosen the solid

Can You Put a Medicine Dropper into a Reagent Bottle?

No, pour the liquid into your container first, then use the dropper

Can Unused Chemicals be Returned to the Original Container?

No, dispose of leftovers in the proper waste container

Should Chemicals Be Wasted?

No, only take the amount required to avoid cost and environmental impact

Can Reagent Bottles be Moved to your Lab Bench?

No; leave bottles on the supply bench and bring your container to dispense

How Should Reagent Bottles Be Held?

With your palm at the label; wipe any drips and ensure the bottle is dry before replacing

How Should Concentrated Acids Be Diluted?

Adding acid slowly to water while stirring (“ADD ACID”), never the reverse.

Can You Pipette By Mouth?

NEVER

How Should Chemicals Be Stored?

In labeled containers; pencil markings are preferred

How Should Toxic Fumes Be Handled?

Under the fume hood with the sash down as far as possible

How Should Flammable Liquids Be Handled?

Keep away from heat and open flames; do not use an open flame in the lab

Can Chemicals Be Removed From the Lab?

No, unless directed explicitly by the lab instructor

What is Special about Alcohol Used in the Lab?

It is chemically denatured and not safe for drinking

What Type of Water Should be Used in Wash Bottles?

Only distilled or de-ionized water; notify the instructor if tap water is accidentally used

How Should Solids Be Weighed?

Placing the solids in a beaker or weighing paper before using the balance, ensure the balance is clean, and brush off any spills

What Should Be Done after Dispensing a Chemical from a Container?

Replace the stopper or lid immediately