Lab Safety and Common Lab Equipment for Middle School
Identify safe lab practices and basic science tools
Lab Safety and Common Lab Equipment for Middle School
Identify safe lab practices and basic science tools
Science - Grade 6-8
- 1
You are about to begin a lab that uses vinegar, baking soda, and glass beakers. List three safety steps you should take before starting.
Think about protecting your eyes, understanding the procedure, and keeping the lab area safe.
Before starting, you should put on safety goggles, read the directions completely, and make sure your workspace is clear and organized. You should also follow your teacher's instructions. - 2
A student finds an unlabeled liquid in a test tube and wants to smell it to figure out what it is. What should the student do instead?
The student should not smell the liquid directly. The student should leave it alone, tell the teacher immediately, and follow the teacher's instructions. - 3
Identify the best tool for measuring exactly 50 milliliters of water: a beaker, a graduated cylinder, or a test tube. Explain your choice.
Look for the tool with narrow sides and measurement markings.
A graduated cylinder is the best tool because it is designed to measure liquid volume more accurately than a beaker or test tube. - 4
What should you do if a glass beaker breaks during a lab?
You should step away from the broken glass and tell the teacher right away. You should not pick up the pieces with your hands unless the teacher gives specific instructions and proper tools. - 5
A lab procedure says to heat a small amount of liquid in a test tube. Describe two safety rules to follow while heating it.
Think about where hot liquid or vapor might go if it splashes.
You should point the open end of the test tube away from yourself and others. You should also use a test tube holder or clamp and heat the liquid gently as directed. - 6
Match each tool to its main use: thermometer, balance, ruler, and graduated cylinder.
A thermometer measures temperature. A balance measures mass. A ruler measures length or distance. A graduated cylinder measures liquid volume. - 7
A student is wearing loose sleeves and long hair while working near a hot plate. What safety concerns are present, and how should the student fix them?
Consider what could accidentally touch the heat source.
Loose sleeves and long hair could touch the hot plate or catch fire. The student should tie back long hair, secure loose clothing, and keep sleeves away from the heat source. - 8
Why is it important to read the entire lab procedure before touching any materials?
It is important because the procedure explains the steps, safety warnings, and materials needed. Reading first helps prevent mistakes, spills, and unsafe actions. - 9
Look at a triple beam balance. What is it used for, and what unit is commonly used for the measurement?
This tool compares how much matter an object has.
A triple beam balance is used to measure mass. The measurement is commonly recorded in grams. - 10
A classmate says, "The lab is almost over, so it is fine to pour extra chemicals down the sink." Explain why this is unsafe.
This is unsafe because some chemicals can damage pipes, react with other substances, or harm the environment. Extra chemicals should be disposed of only as the teacher directs. - 11
Choose the correct equipment for holding a small amount of liquid during a reaction: test tube, meter stick, or thermometer. Explain your answer.
Choose the item that is a container.
A test tube is the correct equipment because it is made to hold small amounts of liquid for observations or reactions. A meter stick measures length, and a thermometer measures temperature. - 12
What should you do if a chemical splashes on your skin or in your eyes?
You should tell the teacher immediately and use the safety shower or eyewash station if directed. You should rinse the affected area with plenty of water and follow emergency instructions. - 13
A student wants to taste a white powder because it looks like sugar. What lab safety rule does this break, and what should the student do?
In a lab, substances can be dangerous even if they look familiar.
This breaks the rule that you should never taste anything in the lab. The student should not touch or taste the powder and should ask the teacher what to do. - 14
Explain the difference between a beaker and a graduated cylinder.
A beaker is usually used for holding, mixing, or pouring liquids, and its measurements are only approximate. A graduated cylinder is used for measuring liquid volume more accurately. - 15
At the end of a lab, what are four responsibilities students have before leaving the room?
Think about cleanup, equipment, waste, and personal safety.
Students should clean their workspace, return equipment to the correct place, dispose of materials as instructed, and wash their hands. They should also make sure their data and materials are organized.