Sig Figs
Are nonzero numbers significant?
Yes
The mass of an object divided by its volume is its …
Density
Name three pieces of lab safety equipment.
goggles, fire extinguisher, fire blanket, lab coat, gloves, shower, eyewash station
What is the metric prefix for 1,000?
Kilo
What is a hypothesis?
An idea that proposes an explanation about a natural phenomenon
How many sig figs does 10.5 have?
Three
How close you are to the right answer is …
Accuracy
What is the container used to stir and hold liquids?
Beaker
What is the SI unit for mass?
Kilograms (kg)
What is an independent variable?
The variable that is changed in an experiment
MIX
How many sig figs does 0.0038 have?
Two
A physical representation of a system of ideas is …
Scientific Model
What tool is used to measure volume?
Graduated Cylinder
What is the SI unit for temperature?
Kelvin (K)
What is a dependent variable?
The variable that results from the independent variable; the measured variable
DRY
How many sig figs will the answer to 14.33+2.4 have?
Three sig figs (16.7)
What is a method of writing less zeros in a mathematical statement that can be used to measure things scientifically?
Scientific Notation
What tool is used to measure the mass of an object?
Triple Beam Balance
What is the SI unit for volume?
Meters cubed (m3)
What is a constant?
The variable that's kept constant throughout the experiment
How many sig figs will the answer to 1.5 x 0.33 have?
Two sig figs (0.49)
A ___ is a proven statement. A ___ is an explanation based on an observation.
Scientific Law; Scientific Theory
If someone is on fire, what should you use ON them?
Fire Blanket
What’s the difference between intensive and extensive methods of measurement?
Intensive: isn’t affected by the amount of substance
Extensive: depends on the amount of substance
What are control groups?
Variables designed to minimize the effects of the changed variable