Data
Lab Equipment
Parts of an experiment
Units
Accuracy and Precision
100
What do you use to make an observation?
Your 5 senses
100
Name at least one safety equipment in the classroom.
Fire extinguisher, fire blanket, eye wash...etc
100
What is the independent variable?
What is being purposely changed and manipulated in an experiment.
100
What is the unit that we use for length?
Meters (m)
100
Define accuracy.
How close to the truth or how correct a measurement is.
200
What is data that uses numbers called?
Quantitative Data
200
What equipment do we use to heat objects in the lab?
Bunsen Burners and hot plates.
200
What is the dependent variable?
What is being measured in an experiment. It's also dependent on the independent variable.
200
What is the unit we use for measuring mass?
Gram (g)
200
Define precision.
The degree to which measurements agree with one other.
300
What is data that doesn't use numbers called?
Qualitative Data
300
What equipment would you use if you want to make precise measurements of liquids?
Graduated Cylinder
300
What are the constant or controlled variables?
What must be kept the same so data collected is reliable.
300
What is the unit we use to measure volume?
Liters (L)
300
A target with a bullseye is an of accuracy or precision?
Accuracy.
400
What is an inference?
A subjective statement based off one's perception. (Involves opinions and bias)
400
What are some equipment that you could use to transfer substances?
Pipettes, spatulas, droppers...etc
400
What is a hypothesis?
A testable prediction that attempts to answer a question.
400
Convert 10 m into km
0.01 km
400
Mrs. Joyner’s dog, Millie, is known to weigh 65 lbs. Millie goes to the vet and is weighed three times at 71 lbs, 70.5 lbs, and 71.1 lbs. Are these measurements accurate, precise, or neither?
Precise but not accurate.
500
Make an inference and an observation about the photo you see.
Teacher will approve.
500
What is this piece of equipment called?
Erlenmeyer Flask
500
Sara wants to see if a new brand of hair dye lasts longer than the brand she currently uses. She puts the new hair dye on the left side of her head and the old brand on her right side. After 2 weeks she observes which side of her head has more gray hair showing through.
Identify the independent, dependent, and constant variables.
Independent: Brand of hair dye
Dependent: amount of gray hairs
Constant: trial period (2 weeks), same head being applied dye to.
500
Convert 423.1 kg into mg
423,100,000 mg
500
How do you find the average of a data set?
Add up all values and divide by the total number of values.