States of Matter
Solid, liquid, gas
All matter is made of what?
Atoms/particles
Liquid to solid
Freezing
What is density?
How close together particles in a substance are.
What is a hypothesis?
Testable prediction
In which state of matter are the particles the closest together?
Solid
Solid to liquid
Melting
What is the formula for density?
What word should an aim start with?
To
Which state(s) of matter takes the shape of its container?
Liquid and gas
Particles of matter repel each other. True or false?
False
Gas to liquid
Condensation
Which state of matter has the highest density?
What are the 3 variables in an experiment?
Independent, dependent and controlled
What causes the differences between states of matter?
Energy/temperature (or pressure too)
What is the relationship between particle motion and temperature?
What causes changes in state and why?
Temperature change -> particles move faster or slower, substance expands or contracts
What determines if an object will sink or float?
Density
Which variables stay the same in an experiment?
Controlled
Which state of matter is (the most) compressible?
Gas
What can you say about atoms of the same element?
Identical
Dry ice undergoes this change of state at room temperature.
Sublimation
Explain the relationship between density, mass and volume.
Increasing mass in a fixed volume increases density.
Increasing volume for a fixed mass decreases density.
Give 2 things you should include in a conclusion at the end of an experiment?
- Summary of main results
- Was hypothesis correct or not?