Definitions
What is a prediction called in a science experiment?
Hypothesis
How does temperature affect viscosity?
Viscosity will decrease with increased temperature.
Does salt make ice freeze at a lower temperature?
yes
When frost forms on leaves outside, the particles are doing what?
moving closer together
In which state of matter do the molecules move the fastest?
gas
The variable that responds in an experiment.
dependent variable
Do atoms in water prefer to stick together or to be separated?
stick together
Change of ______________ is what makes one state of matter change into another state.
Temperature (heat added or subtracted)
Give an example of evaporation
steam, rain clouds gathering, puddles disappearing, etc.
evaporation
The variable that is purposefully changed in an experiment.
Independent variable
What is the science term that describes why a bug can "walk" on water or why your needle balanced on toilet paper for a moment before sinking.
surface tension
Water boils at _____ degrees F or _______ degrees C.
212/ 100
Why does your cold glass become wet on the outside?
condensation
What states of matter did we discuss in this chapter (there are more)?
A __________ is anything which has a specific shape and size.
solid
Does the air around you have atoms? Give an example how you can prove or disprove it.
Yes. The upside-down cup held air underwater. The water could not get into the cup because the air blocked it.
Newton's Law of _____________ says that liquids flow more readily when heat is added.
Viscosity
When very hot metal is being poured, what is happening to the particles?
They are moving further apart.
When a gas becomes a liquid, it is called _________.
Condensation
The temperature that makes a liquid turn into a gas.
Boiling point
Describe what happened when you mixed corn starch with some water. Give the scientific name and how it behaved.
A non-Newtonian liquid can be a solid when pressure it put on them. (also called amorphous solid)
In our tomato lab, what was the dependent variable?
the temperature of the ketsup
When hail forms, is heat being added or removed?
removed
Which state of matter has atoms moving the slowest and why?
solids, because they are so tightly packed together, they can't move