EHS101 WHMIS AND LAB SAFETY EXAMS
SET FEATURING SOLVED QUESTIONS AND
ACCURACY CHECKED ANSWERS
●● What are some lab safety rules?
Answer: 1. Wear protective gear. 2. No horseplay. 3. Respect equipment.
4. Avoid skin contact with chemicals. 5. Read warning labels. 6. Never
use unlabeled chemicals. 7. No eating or drinking in the lab. 8. Note
emergency exits. 9. Keep long hair tied back. 10. Wear closed toe shoes.
11. Know where the emergency eye wash station is.
●● What is matter?
Answer: Anything that has mass and takes up space.
●● What is a pure substance?
Answer: Made of only one compound or element.
●● What is a mechanical mixture?
Answer: A mixture made up of two or more different kinds of particles;
you can see the different parts.
●● What is a solution?
, Answer: A mixture made when a solute is dissolved in a solvent. You
cannot see the different parts.
●● What is a homogeneous mixture?
Answer: The mixture appears uniform; you cannot see the individual
parts.
●● What is a heterogeneous mixture?
Answer: The mixture does not appear uniform; you can see the different
parts.
●● What is a compound?
Answer: A substance comprised of the same molecules; made from two
or more elements.
●● What is an element?
Answer: A substance that cannot be broken down into simpler
substances.
●● What is filtration?
Answer: Separating a mixture with a very fine layer that insoluble parts
are unable to pass through.
●● What is sieving?
SET FEATURING SOLVED QUESTIONS AND
ACCURACY CHECKED ANSWERS
●● What are some lab safety rules?
Answer: 1. Wear protective gear. 2. No horseplay. 3. Respect equipment.
4. Avoid skin contact with chemicals. 5. Read warning labels. 6. Never
use unlabeled chemicals. 7. No eating or drinking in the lab. 8. Note
emergency exits. 9. Keep long hair tied back. 10. Wear closed toe shoes.
11. Know where the emergency eye wash station is.
●● What is matter?
Answer: Anything that has mass and takes up space.
●● What is a pure substance?
Answer: Made of only one compound or element.
●● What is a mechanical mixture?
Answer: A mixture made up of two or more different kinds of particles;
you can see the different parts.
●● What is a solution?
, Answer: A mixture made when a solute is dissolved in a solvent. You
cannot see the different parts.
●● What is a homogeneous mixture?
Answer: The mixture appears uniform; you cannot see the individual
parts.
●● What is a heterogeneous mixture?
Answer: The mixture does not appear uniform; you can see the different
parts.
●● What is a compound?
Answer: A substance comprised of the same molecules; made from two
or more elements.
●● What is an element?
Answer: A substance that cannot be broken down into simpler
substances.
●● What is filtration?
Answer: Separating a mixture with a very fine layer that insoluble parts
are unable to pass through.
●● What is sieving?
