WorksheetsScientific Method, Lab. Apparatus and Safety Rules Test
Total questions: 35
Worksheet time: 6mins
What is the first step of the scientific method?
Formulate a hypothesis
Conduct experiments
Ask a question
Analyze data
A hypothesis is best described as:
A proven fact
An educated guess or prediction
The final conclusion of an experiment
A random observation
Which of the following is NOT a characteristic of a good scientific hypothesis?
It is testable
It is based on prior knowledge
It is always proven correct
It can be falsified
In an experiment, the factor that is changed or manipulated by the researcher is called:
Dependent variable
Control group
Independent variable
Constant
What is the purpose of a control group in an experiment?
To provide a basis for comparison
To change the independent variable
To collect data
To formulate a hypothesis
After conducting an experiment, what is the next step in the scientific method?
Ask a new question
Analyze data and draw conclusions
Publish results
Formulate a new hypothesis
The scientific method is:
A linear, step-by-step process that never varies
Only used in biology and chemistry
A flexible, iterative approach to investigating phenomena
Always guaranteed to provide correct results
What does "replication" mean in scientific research?
Copying someone else's experiment exactly
Repeating an experiment to verify results
Publishing research findings
Changing variables in an experiment
Which of the following is an example of qualitative data?
The temperature of a solution in degrees Celsius
The number of plants in a garden
A description of the color and texture of a leaf
The mass of an object in grams
What is the primary purpose of peer review in scientific research?
To ensure experiments are conducted safely
To verify the accuracy and validity of research findings
To decide which experiments should be funded
To assign credit for discoveries
What should you always wear in the lab to protect your eyes?
Sunglasses
Regular eyeglasses
Safety goggles
Contact lenses
When should you put on your personal protective equipment (PPE)?
After starting the experiment
Before entering the laboratory
Only when working with chemicals
When the teacher reminds you
What should you do if you get a chemical splash in your eye?
Rub your eyes vigorously
Immediately use the eyewash station for at least 15 minutes
Wait for the burning sensation to stop
Apply eye drops
Which of the following is NOT allowed in the lab?
Wearing closed-toe shoes
Tying back long hair
Eating or drinking
Following written procedures
How should you handle broken glassware?
Pick it up with your bare hands
Sweep it up and dispose of it in the regular trash
Leave it for someone else to clean up
Use a broom and dustpan, and dispose of it in a designated glass disposal container
What is the proper way to smell chemicals in the lab?
Take a deep breath directly from the container
Waft the fumes towards your nose with your hand
Ask a classmate to smell it for you
Never smell chemicals in the lab
When using a Bunsen burner, what should you do with long hair and loose clothing?
Ignore it, it's not a big deal
Tie back hair and secure loose clothing
Wear a hat to cover your hair
Cut your hair short before the lab
What should you do before leaving the lab?
Turn off all gas and water
Clean and return all equipment
Wash your hands thoroughly
All of the above
If you're unsure about a procedure or the use of equipment, what should you do?
Ask your lab partner
Skip that part of the experiment
Guess and proceed anyway
Ask your teacher for clarification
What is the correct way to dispose of chemicals in the lab?
Pour them down the sink
Mix them together in a waste container
Follow your teacher's instructions for proper disposal
Take them home for later use
In case of a fire in the lab, what should you do first?
Try to extinguish it yourself
Open all windows
Alert your teacher immediately
Run out of the lab
Why is it important to keep your work area clean and organized?
To impress your teacher
To prevent accidents and contamination
To make the lab look nice
It's not important as long as you finish the experiment
What should you do if you spill a chemical on your skin or clothing?
Wipe it off with a paper towel
Ignore it if it doesn't burn
Flush the area with water for at least 15 minutes and inform your teacher
Apply a bandage to the area
Which apparatus is used to measure the volume of liquids accurately?
Beaker
Graduated cylinder
Erlenmeyer flask
Test tube
What is the primary function of a burette?
Heating solutions
Measuring precise volumes of liquids
Storing chemicals
Filtering solutions
Which piece of equipment is used to grind solid substances into a fine powder?
Mortar and pestle
Crucible
Petri dish
Watch glass
What is the main purpose of a desiccator?
To heat substances
To keep substances dry
To measure mass
To filter liquids
Which apparatus is commonly used for heating liquids in a chemistry lab?
Bunsen burner
Thermometer
Pipette
Funnel
What is the function of a volumetric flask?
To prepare solutions of exact concentration
To separate liquids of different densities
Which piece of equipment is used to measure the mass of substances?
Graduated cylinder
Analytical balance
Thermometer
Barometer
What is the primary use of a watch glass in the laboratory?
To magnify small objects
To cover beakers
To evaporate liquids
To measure time
Which apparatus is used to separate mixtures based on differences in boiling points?
Centrifuge
Distillation apparatus
Chromatography column
Spectrophotometer
What is the main function of a crucible?
To measure liquid volume
To heat substances to very high temperatures
To store solutions
To measure gas pressure
Which piece of equipment is used to transfer small, measured volumes of liquids?
Beaker
Pipette
Erlenmeyer flask
Test tube rack
What is the primary use of a ring stand in the laboratory?
To support and hold other equipment
To measure the diameter of circular objects
To create a sealed environment for reactions
To generate electrical current
