Chem 1LC prac cal| Ques ons and answers | Updated
NEW | 2025
When should gloves be worn?
handling toxic or corrosive chemicals
what should a student locate when entering lab?
fire ex nguisher
emergency exists
safety shower
stairwells
eye wash sta ons
what should you do when working with
1. a heat source?
2. a vola le chemical?
3. a bo le containing a chemical?
1. always assume that glassware and metal objects are hot
2. work in the fume hood
3. all of these
what is the minimum amount of me an area of a person's body that has been exposed to a
harmful chemical should be washed?
15 minutes
chemical or physical change/property
1. mel ng point of water is 0 degrees Celsius
2. when an aqueous solu on with a pH less than 7 is added to sodium bicarbonate, bubbling
occurs
3. cooking an egg
4. lowering of vapor pressure
5. combina on of yellow and blue paint to create a green paint
6. forma on of solid a.er reagent combina on
7. crystal forma on upon solu on forma on
, 1. physical
2. chemical
3. chemical
4. physical
5. physical
6. chemical
7. physical
significant figures a.er decimal point
1. beaker
2. graduated cylinder
3. volumetric flask
4. Erlenmeyer flask
1. 0
2. 2
3. 2
4. 0
freedom from danger, injury or damage
safety
a poten al source of danger or harm
hazard
the probability of suffering harm
risk
coming in contact with a hazard
exposure
which type of eye protec on provides the best protec on against a chemical splash
chemical splash safety googles
RAMP
the hazard of acid to the eyes
recognize
RAMP
procedure, their knowledge, & exposure probability
NEW | 2025
When should gloves be worn?
handling toxic or corrosive chemicals
what should a student locate when entering lab?
fire ex nguisher
emergency exists
safety shower
stairwells
eye wash sta ons
what should you do when working with
1. a heat source?
2. a vola le chemical?
3. a bo le containing a chemical?
1. always assume that glassware and metal objects are hot
2. work in the fume hood
3. all of these
what is the minimum amount of me an area of a person's body that has been exposed to a
harmful chemical should be washed?
15 minutes
chemical or physical change/property
1. mel ng point of water is 0 degrees Celsius
2. when an aqueous solu on with a pH less than 7 is added to sodium bicarbonate, bubbling
occurs
3. cooking an egg
4. lowering of vapor pressure
5. combina on of yellow and blue paint to create a green paint
6. forma on of solid a.er reagent combina on
7. crystal forma on upon solu on forma on
, 1. physical
2. chemical
3. chemical
4. physical
5. physical
6. chemical
7. physical
significant figures a.er decimal point
1. beaker
2. graduated cylinder
3. volumetric flask
4. Erlenmeyer flask
1. 0
2. 2
3. 2
4. 0
freedom from danger, injury or damage
safety
a poten al source of danger or harm
hazard
the probability of suffering harm
risk
coming in contact with a hazard
exposure
which type of eye protec on provides the best protec on against a chemical splash
chemical splash safety googles
RAMP
the hazard of acid to the eyes
recognize
RAMP
procedure, their knowledge, & exposure probability
