Show:
Observation vs Inference
Accuracy vs Precision
Vocabulary
States of matter
physical and chemical
100
Define observation
Data you collect with your 5 senses.
100
Define accuracy
How close you are to the true value.
100
Solute
substance dissolved into a solvent
100
What state has charged molecules?
Plasma
100
what is the formula for density?
Density = mass / volume
200
Define Inference
What you think is happening based on your observations
200
Define precision
Repeatable
200
viscocity
Resistance to flow
200
indefinite shape but definite volume
What is a liquid.
200
What must happen for a chemical change to occur
The chemical composition needs to be altered.
300
Observation or Inference The fish is happy.
Inference
300
What do you need to determine if data is precise?
several data points
300
malleability
The ability to be pounded into thin sheets
300
definite ahpe and definite volume
solid
300
Is dissolving a solute into a solvent a physical or chemical change?
physical change
400
Observation or inference The fish is long.
observation
400
What do you need to determine the accuracy?
The true value
400
homogeneous mixture
mixture that has is parts evenly distributed.
400
Why didn't the temperature change after boiling for 5 minutes?
Energy was being used to change the liquid into a gas.
400
is sublimation a physical or chemical change and what is sublimation.
Physical...... A solid turning into a gas.
500
observation or inference The fish has 7 fins
observation
500
What is the true value in a dart board?
"the bull's eye"
500
What is it called when a solid turns directly into a gas?
What is deposition
500
What happens to gas when the pressure is reduced and temperature stays the same.
The volume increases
500
Which phase has the most kinetic energy? (not plasma)
What is a gas.