structures
define Function
a structures use
always worn in the lab
safety goggles
_____ is made out of tiny particles
Matter
qualitative observation
observation using senses
what structure is the human skeleton
frame structure
used to determine temperature of liquid
thermometer
A substance made of 1 material
pure substance
quantitative observation
observation using measurements
what structure supports weight throughout it but small defects can make it fail
Shell structure
used to make small drops or liquid samples
medicine dropper
a mixture that is fully dissolved
solution
Define independent variable
factor that experimenter can change
what are the 2 external forces
static and dynamic load
ideal for mixing and prevents liquid or chemical spills
Erlenmeyer Flask
a mixture that is NOT fully desolved
mechanical mixture
Define dependent variable
experiments conclusion (changes to the independent variable can alter the dependent variable)
what are the 4 internal forces
Tension, compression, torsion, shear.
what peace of lab equipment is commonly used to measure liquids
graduated cylinder
define solvent
substance that dissolves other substances
what are the 7 steps of the scientific method
purpose, hypothesis, apparatus, method, observation, conclusion, application