Definitions
Define matter
Something that has mass and takes up space
What is the difference in arrangement of particles in solids, liquids, and gases?
The particles in solids vibrate in fixed positions, while the particles in liquids are mobile, though still close together. The particles in the gas state are far apart and move very fast.
What is the force responsible for lightening?
electrical force
List three kinds of energy
sound, electrical, light, thermal, chemical
What are the three subatomic particles called? What are their charges?
proton, neutron, electron
What is the difference between a pure substance and a mixture?
Pure substances are made of one kind of substance. Mixtures are physical combinations of two or more substances
Name the change in state: Water vapor becomes liquid water droplets.
condensation
What are the two types of forces?
Contact and field forces.
What is the main energy released from a piano?
sound energy
What substance did humans used to think we could turn into gold? Bonus question: they were searching for gold but found a different element instead. what element?
urine: Phosphorus
In what two ways can a force relate to an object?
Push or pull
Name the phase change: hot water is heated underground and produces steam
boiling
A book rests on an incline and doesn't slide down the ramp. What type of force keeps the book from sliding?
friction force
Give an example of potential energy
answers may vary
What are the benefits and draw backs of using nuclear power for energy?
answers may vary
Define energy
Energy is the ability to do work
Dry ice is an example of...
sublimation
A student sits on a swing. The chains/ropes are holding the student up. What type of force is this?
Tension force
static on a sweater is an example of what kind of energy?
electrical energy
Rust is an example of what type of change in matter? (physical, chemical, nuclear)
CHEMICAL
What are the two types of mechanical energy
kinetic and potential energy
How is the plasma state of a substance different from the gas of the same substance?
The particles in both plasmas and gases are far apart and move veryfast, but the particles in plasmas collide so hardthat they break apart and become electrically charged.
What force acts against gravity to keep you from sinking into solid ground when you stand?
The force of the solid ground against your feet keeps you fromsink-ing into the ground.
What happens to energy when it is used? What is this principle called?
The energy used in every process is changed into other kinds of energy or transferred to other objects. No energy is lost or gained. This principle is called the conservation of energy.
When platinum turns into gold, what type of change in matter is this?
nuclear change