Properties/Changes of Matter
This describes how a substance reacts with other substances.
Which state of matter has a definite shape and volume?
solid
What happens to gas pressure when the temperature of the gas decreases?
decreases
What term describes energy due to movement?
kinetic energy
How many kilometers equal 10,000 meters?
10 km
Physical change
How do particles behave inside a solid?
They vibrate in place
How does the volume of a gas change when thermal energy is added at constant pressure?
increases
When is an object considered to be in motion?
When its position changes relative to its surroundings
What must a scientist do before forming a hypothesis?
Ask a question/make an observation
A reaction that forms a solid when two liquids are mixed is an example of what type of change?
Chemical change
What characteristic makes sugar a crystalline solid?
Particles are arranged in a regular, repeating pattern
Energy is...
the ability to do work or cause change
Which action increases elastic potential energy the most?
Stretching/increasing the tension (of a rubber band for example)
What is the role of a control variable in an experiment?
The variable that is kept the same
Why does weight change depending on location, while mass does not?
Weight depends on gravity, but mass does not
This describes vaporization that only occurs at the surface of a liquid.
Evaporation
What happens to thermal energy when particles slow down?
decreases
How can you increase power while doing the same amount of work?
Doing the work faster (in less time)
Why are scientific reports written using third-person language?
keep reports objective and professional
The law of conservation of mass states that
Matter is not created or destroyed during a chemical reaction
What happens to particle energy when a liquid turns into a solid?
particles lose energy
Explain the relationship between temperature, particle motion, and gas pressure.
As temperature increases, particles move faster and pressure increases (and vice versa)
Which form of energy is not normally involved in everyday human body processes?
nuclear
Why is using consistent procedures and controlled variables important for reliable results?
To ensure accurate, reliable, and repeatable results