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Safety/Measurement

Vocab practice for lab and measurements in Chemistry

TermDefinition
Chemistry the study of matter, its properties, how and why substances combine or separate to form other substances, and how substances interact with energy.
Hypothesis "If I give a plant an unlimited amount of sunlight, then the plant will grow to its largest possible size."
Qualitative Data 5 meters, 10 meters, 20 meters
Qualitative Data Data collected that cannot be measured with numbers but merely observations.
Unit Grams, millilitres, cm2
Observation the action or process of observing something or someone carefully or in order to gain information
Dependent Variable The result of an experiment which produces data for collection.
Independent Variable A student manipulates the amount of carbon dioxide a plant receives to determine the affect on growth.
Control group A group in an experiment that receives no treatment and is used as a comparison
Digital balance An instrument used to measure the amount of matter an object possesses
Bunsen Burner A student needs to heat up a piece of metal using a flame.
Hot plate A student needs to slowly heat up a beaker of water to 100 degrees Celsius.
Graduated cylinder Used to measure liquid volume with great precision and accuracy.
Beaker A student uses this to mix and store chemicals but does NOT want to use this to measure volume.
Flask A student wants to heat a liquid in a flat bottom container with a narrow neck which is easy to stop up.
Goggles Always wear this equipment to protect your eyes in lab.
Apron Always wear this equipment to protect your clothing in lab.
Precision A student makes the following measurements, 1 m, 1.5 m, 1 m , 1.5 m. The student had good _____________if the accepted value was 2m?
Estimated Digit The number 4 in the following measurement (2.33354cm)
Accuracy A person playing darts hits the bullseye 9/10 times. The person exhibits good __________________?
Scientific notation A way to represents very small or very large numbers.
Significant figures/digits The amount of numbers which determine the amount of accuracy a measurement contains.
Created by: aethomas4415
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