Safety First!
If your lab partner’s clothes catch on fire, what is the first thing you should do?
TELL THE TEACHER!!
Used to grind solid materials into a powder
Mortar and Pestle
Data that is expressed as numbers or measurements (e.g., 5 grams, 12 cm)
Quantitative data
What is the dependent variable?
What is being measured
This type of graph is used for showing percentages.
Circle Graph
What is the best safety equipment for helping a person who is on fire?
Fire blanket
Used to transfer liquids from large to small containers
Funnel
Data that is descriptive and based on qualities rather than numbers (e.g., green, smell, soft).
Qualitative data
Factors that stay the same in an experiment so that the results are reliable are called…
Constants
The best graph to show quantitative vs. quantitative data
Line Graph
What word is used to describe how to appropriately smell unknown substances in lab?
Waft
Best glassware to measure precise amounts of liquid
Graduated cylinder
A subjective guess or conclusion based on an observation.
Inference
A rule or principle that describes how something happens in nature is a…
Law
List 3 things every line graph must have.
Title, X-Axis label, Y-Axis label
List 2 things you should wear to protect yourself from chemicals.
Safety goggles, lab apron, long pants or closed toed shoes. (Must have 2 to get credit)
What two objects are used to heat substances in lab?
Hot plate and Bunsen burner
An objective description of something you experience using your 5 senses, not an opinion.
Observation
Explain the difference between precise measurements and accurate measurements.
Precise measurements are consistent/specific; accurate measurements are correct.
What axis does the dependent variable go on?
Y-Axis
What specific precaution is necessary for heating test tubes?
Tilt the mouth of the test tube away from you and your partners
The curve that forms in liquids in graduated cylinders.
Meniscus
An explanation of WHY things happen in nature, based on evidence and repeated testing.
Theory
What is a testable explanation for a natural phenomenon or observation called?
Hypothesis
What axis does the independent variable go on?
X-Axis