Lab safety and tools
What does the acronym P.A.S.S stand for when using a fire extinguisher.
Pull, aim, squeeze, sweep
Which unit is best for measuring the mass of a single paperclip?
A) Kilograms B) Grams C) Milligrams D) Liters
C) Milligrams (or Grams)
Match the term: A standard group used for comparison that receives no special treatment.
Control group
What type of graph best compares quantitative data over quantitative data (such as time)?
Line graph
Name the piece of glassware used for holding or mixing liquids, but never for measuring volume accurately, and explain its purpose.
Test tube
Name the most precise piece of glassware for measuring liquid volume.
Graduated cylinder
Why must constants be kept the same in an experiment?
To ensure that changes in the dependent variable are only caused by the independent variable
Define the difference between an observation and an inference.
An observation uses the 5 senses to gather objective facts; an inference is a logical interpretation or guess based on observations.
Which lab safety rule is FALSE?
A) Waft chemicals when smelling them.
B) Dispose of all chemicals by pouring them down the sink drain.
C) Wear closed-toe shoes and tie back long hair.
D) Handle hot glassware with safety tongs.
Answer: B (Chemicals should be disposed of as directed by the teacher, not poured down the drain).
Convert 5.2 meters into centimeters
520 cm
Identify the Independent and Dependent variables: "Testing how different amounts of fertilizer affect plant growth height.
Independent = Amount of fertilizer; Dependent = Plant growth height.
Classify each statement about a cup of coffee as qualitative or quantitative
"The coffee is hot."
"The coffee is 65 degrees
1. qualitative
2. quantitative
Which student is dressed most appropriately for lab day?
Student A: Sandals, lab apron, tied-back hair.
Student B: Jeans, sneakers, hair tied back, no baggy sleeves.
Student C: Shorts, boots, dangly earrings.
Answer: Student B
Convert 25 Celsius to Kelvin
298.15 K
What is the difference between a scientific law and a scientific theory?
A law describes what happens in nature; a theory explains why it happens.
Two groups measure a $10.00mm mass:
Group A: 14.1, 14.2 14.1
Group B: 9.9, 12.5, 7.6
Which group is more precise, and which is more accurate?
Group A more precise
Group B more accurate