Safety Symbols
Lab Safety
Lab Equipment
Scientific Inquiry
Lab Safety II
100
What does this safety symbol mean
You will need to wear safety goggles
100
You are doing an experiment in a science classroom. Two chemicals that should not be mixed together are accidentally mixed. What is the first thing you should do?
A. Clean up the mixed chemicals.
B. Find a janitor who is trained in cleaning up chemical spills.
C. Notify a teacher or supervisor that a chemical accident has happened in that room.
D. Put on safety clothing that covers the entire body, and then put on special breathing equipment and goggles.
C. Notify a teacher or supervisor that a chemical accident has happened in that room.
100
What instrument would be the most appropriate to measure the mass of an apple?
A.Graduated cylinder
B.Test Tube
C.Meter stick
D. Triple Beam Balance
D. Triple Beam Balance
100
What are the three components of the CER model
Claim
Evidence
Reasoning
100
True or False: Cold glass looks the same as hot glass
True
False
True
200
What is this symbol?
You are working with animals
200
Prior to participating in lab investigations you must do the following:
A. Purchase a pair of safety goggles to wear during labs.
B.Put a lab coat on.
C.Place your jewelry on your teacher’s desk.
D. Turn in a signed copy of the safety contract to your teacher
D. Turn in a signed copy of the safety contract to your teacher
200
To calculate the volume of a large cube the best instrument would be:
A. A metric ruler
B. A balance
C. A graduated cylinder
D. A test tube
A. A metric ruler
200
What is a claim
A statement that answers a question
200
Which of the following is appropriate to wear in the lab while conducting an experiment?
Loose-fit clothing
Dangling jewelry
Slides
Closed-toed shoes
Closed-toed shoes
300
What does this symbol mean and what should you do?
You will be working with an open flame. If you have long hair tie it back as well as loose clothing.
300
A science lab activity used test tubes containing a certain chemical. One student noticed that his test tube had a different colored chemical from everyone else.
What is the first thing this student should do to make sure everyone stays safe?
A.Shake the test tube and observe what happens.
B.Sniff two or three other test tubes to see if they smell the same.
C.Pour some of the chemical out to see what it looks like.
D.Put your hand in the air to get your teacher’s attention.
D.Put your hand in the air to get your teacher’s attention.
300
You want to demonstrate the reaction between a small amount of magnesium and oxygen. Your teacher tells you that a large amount of heat and light result from this exothermic reaction. Which of the following safety equipment is NOT needed?
A.ice to keep the reaction cool
B.goggles to protect your eyes
C.gloves to protect your hands from burns
D.chemical fire extinguisher to protect from accidental fire
A.ice to keep the reaction cool
300
What is evidence and how do you gather it?
Evidence is the things that support your claim. You can observe them and measure evidence.
300
When you finish working with chemicals, biological specimens, and other lab substances you should?
Wash your hands with soap and water
Wash your hands with water
Clean your hands with hand sanitizer
1. Wash your hands with soap and water
400
What does this symbol mean and what should you after the lab?
You are working with a poisonous chemical. Wash your hands with soap and water after
400
Describe two science safety rules that apply to all science labs.
Answers may vary
400
Your teacher has given you six blocks, all of which have the same volume, shape, and color. However, the blocks have different masses. What should you use to find the mass of each block?
Balance or scale
400
What is the R in CER and explain it
Reasoning: Explains how and why the evidence supports a claim using science ideas
400
Describe two safety rules that apply to all labs.
Answers will vary
500
What does this mean and how should you sniff a chemical ?
Fumes, work in a well ventilated area. If you need to sniff an unknown chemical you should waft it not directly inhale it.
500
While heating a liquid for a lab activity, you notice a crack in the beaker. What can happen to the beaker if you continue to heat the liquid? Why is this a safety hazard?
It will crack and break. It is a safety hazard because someone could get cut or chemicals could splash on someone.
500
Name and describe 3 lab equipment tools and their uses
Answers will vary
500
What is the engineering design model and why is it important?
Answers may vary