Chemistry Lab Ch1

True or False.

It is essential to secure your hair back to avoid injury in the lab.

True

On this safety label, the blue stands for?

Health

True or False.

This arrow is pointing to the lower limit of the glass just to the right of it.

True

True or False

This is a pipette. .

True

True or False.

Gloves are not an essential part of a safe laboratory.

False

True or False.

Never return unused chemicals to the original container.

True

What safety features is/are important when first learning about your laboratory?

A. eyewash station

B. all of these

C. showers

D. exits

B

The first step in dealing with a chemical spill is to:

 

A. Clean the spill with your gloves

B. Try to determine the chemical content

C. Clean the spill with a cloth

D.Alert your instructor

D

If you find any undissolved solids, it can be removed by preforming a:

 

A. cold filtration

B. using only crystal paper

C. hot filtration

D. all of these

C

When dealing with hot objects, safety heat resistant gloves are:

 

A. Only when you decide its necessary 

B. Sometimes necessary

C. Never necessary

D. Always necessary

D

What is in this water bath?

A. Butanol

B. Methanol

C. Butane

D. Ethanol

D

True or False.

Treat only some chemicals as hazardous.

False

True or False

Organic solvents are not flammable?

False

True or False

Safety goggles are a must in the laboratory.

True

The technique of recrystallization should be performed in the following order:

A. Dissolution of sample, Choosing a solvent, Decoloration and hot filtration, Cooling/Crystallization

 

B. Cooling/Crystallization, Choosing a solvent, Dissolution of sample, Decoloration and hot filtration

 

C. Choosing a solvent, Dissolution of sample, Decoloration and hot filtration, Cooling/Crystallization

 

D. Decoloration and hot filtration, Choosing a solvent, Dissolution of sample, Cooling/Crystallization

C