States of matter, simple machines, and basic chemistry and physics facts for a middle school physical science course.
40 cards · basic cards · AI-written, checked twice. Edit anything.
- What is a solid?
- Matter with a definite shape and volume that does not change
- What is a liquid?
- Matter with a definite volume but no definite shape; it takes the shape of its container
- What is a gas?
- Matter with no definite shape or volume; it spreads to fill its container
- What is plasma?
- A fourth state of matter consisting of ionized gas with free electrons and ions
- What is melting?
- The process in which a solid changes into a liquid
- What is freezing?
- The process in which a liquid changes into a solid
- What is boiling?
- The process in which a liquid changes into a gas
- What is condensation?
- The process in which a gas changes into a liquid
- What is sublimation?
- The process in which a solid changes directly into a gas without becoming a liquid
- At what temperature does water freeze?
- 0 degrees Celsius (32 degrees Fahrenheit)
- What is a lever?
- A simple machine made of a bar that pivots on a fixed point called a fulcrum
- What is a fulcrum?
- The pivot point on which a lever rotates
- What is a pulley?
- A simple machine with a grooved wheel and a rope used to lift objects or change the direction of force
- What is an inclined plane?
- A simple machine that is a slanted surface used to raise or lower objects
- What is a wedge?
- A simple machine shaped like a triangle used to cut, split, or separate objects