States of Matter
This state of matter has a definite volume but no definite shape.
What is a liquid?
This scientific term refers to the measure of the average kinetic energy of a substance's particles.
What is temperature?
This is the phase change process where a gas turns into a liquid.
What is condensation?
This temperature scale sets the freezing point of water at 0 and the boiling point at 100.
What is celsius?
Unlike solids and liquids, gases possess this key physical property allowing them to be squished into smaller volumes.
What is compressibility?
This state of matter has no definite shape and no definite volume.
What is a gas?
According to Kinetic Molecular Theory, as a substance's temperature increases, its particles move at this relative rate.
What is faster?
Solid Carbon Dioxide (dry ice) turns directly into Carbon Dioxide gas through this phase change process.
What is sublimation?
This is the boiling point of water expressed in standard SI units (°C).
What is 100 °C?
You can smell fresh baked cookies from another room because gas particles spread out through this process.
What is diffusion?
Particles in this phase vibrate in place within a fixed volume.
What is a solid?
This theory states that matter consists of small particles in constant motion that collide with each other and their container walls.
What is the Kinetic Molecular Theory?
These two phase changes require adding thermal energy to occur (Name both).
What are melting and vaporizing?
While a glass of ice is actively melting, the thermometer reads 0 °C for three minutes because this stays constant during a phase change.
What is temperature?
Inside an inflating airbag, pressure increases as this factor regarding the gas molecules inside increases.
What is the number of gas molecules?
Compared to particles in a solid, particles in the gaseous phase have much higher values of this type of energy.
What is kinetic energy?
When a helium balloon shrinks after being placed in a freezer, it is because this metric of the helium atoms decreased.
What is the average kinetic energy (or temperature)?
Water droplets forming on a mirror positioned over a pot of boiling water demonstrate these two sequential phase changes.
What are vaporization and condensation?
During a phase change, this form of energy continues to change even though the temperature remains constant.
What is thermal energy?
On a cold morning, car tires deflate because a drop in temperature causes gas particles to contract, leading to a decrease in this.
What is gas pressure?
A student misclassifies sand as a liquid because it pours and takes the shape of its container. She misunderstood that the particles in the container represent this, not individual grains of sand.
What are molecules (or atoms)?
On a graph tracking water temperature changes as heat is steadily added, the lowest kinetic energy occurs in this state/phase range.
What is the solid phase?
When mercury changes state from a liquid to a solid, its atoms experience these two simultaneous changes in position and kinetic energy.
What is moving closer together and losing kinetic energy?
As steam cools down and condenses into liquid water, the water molecules move at this relative speed and occupy this relative amount of space.
What is moving slower and occupying less space?
If a flexible container of gas is heated at constant external pressure, the volume increases because particles move faster and hit the container walls with this.
What is more force?