variable in an experiment that is being measured or calculated
What is dependent variable?
100
The formula for density
What is D=M/V
100
the basic unit of matter
What is an atom?
100
is only transferred but can never be created nor distroyed
What is energy?
200
on Earth water exists in these three states of matter
What is solid, liquid and gas?
200
variable in an experiment that is being changed or manipulated by the experimenter
What is independent variable?
200
mass = 40.0 g and volume = 20.0 cm3
What is density = 2.0 g/cm3
200
anything that has mass and takes up space
What is matter?
200
Horseplay in the lab (or classroom) is..
What is always against the rules?
300
You measure a piece of chalk to be 8 cm long
What is an observation
300
number of times an experiment should be repeated to be valid
What is until the data is consistent?
300
an object or substance will sink in water because...
What is the substance is more dense than water (1.0 g/cm3)
300
Tea with sugar is an example of this
What is (homogeneous) mixture
300
personal belief that may affect observations or conclusions in an experiment
What is bias
400
You hold a pendulum bob to your nose and release it. It does not come back to the same place because of friction.
What is an inference?
400
observation that seems to be true all of the time but is not explained
What is scientific law (principle)
400
A beaker is filled with 100 mL of water and a sphere is placed in the beaker the water level increases to 125 mL. When the sphere is place on a balance it shows a mass of 100 g. The density is...
What is 4 g/cm3<sup)
400
at its boiling point a liquid becomes this. Like liquid Nitrogen at -196 °C.
What is a gas
400
science put to use
What is technology
500
an explanation supported by data gathered over a period of time which allows scientists to make predictions about new events
What is a Scientific Theory?
500
the density of half a glass of salt water (minus the glass)
What is the same as the density of a full glass
500
state of matter in which molecules are attracted to each other but can change position