2-1: States of Matter
A substance with a definite shape and a definite volume is a _____
A substance with a definite shape and a definite volume is a solid
A puddle dries up by the process of _____
A puddle dries up by the process of evaporation.
When the temperature of a gas at constant volume is increased, the pressure of the gas ______
When the temperature of a gas at constant volume is increased, the pressure of the gas increases.
Does liquid have a definite shape or volume? Explain.
Because its particles are free to move, a liquid has no definite shape. However, it does have a definite volume. Liquids will change to the shape of their container, but the particles will not spread out and fill available space.
When you see fog or clouds, you are seeing water in the _______ state.
When you see fog or clouds, you are seeing water in the liquid state.
What is Charles's Law? Explain.
According to Charles's Law, when the temperature of a gas is increased at a constant pressure, its volume increases.
Does gas have a definite shape or a definite volume? Explain
As gas particles move, they spread apart and fill all space available. Therefore, gas does not have a definite shape or volume.
What happens to the particles of a solid when it melts?
At a solid's melting point, its particles vibrate so fast that they break free from their fixed positions.
What is Boyle's Law? Explain.
Boyle's law states that when the pressure of a gas at constant temperature is increased, the volume of the gas decreases.
Why do liquids and gases take the shape of their containers while solids do not?
The particles of a solid have a definite shape and volume, but the particles of gases and liquids do not have definite shape. Because of this, they will take the shape of whatever container they are in.
What happens to the particles of a liquid when it vaporizes?
Vaporization occurs when the particles in a liquid gain enough thermal energy to move independently.
The relationship between the number of lumpia you eat and the number of lumpia you have leftover is inversely proportional. Explain what this means.
When two variables are inversely proportional it means that as one increases, the other will decrease. The more lumpia you eat, the less you will have leftover.
Compare and contrast the movement of particles in solids, liquids, and gases.
Particles are moving in solids, liquids and gases. In solids they vibrate in place and mostly stay in place. In liquids, particles move and flow around each other but are still loosely connected. In gases, particles move very quickly and independently of other particles.
What happens to the particles of a solid when it sublimates?
During sublimation, the particles of a solid do not pass through the liquid state as they form a gas.
Explain why putting a dented ping pong ball in boiling water is one way to remove the dent in the ball.
Putting the ping pong ball in boiling water will heat up the gas inside the ping pong ball, increasing the pressure inside of the ping pong ball until it pushes the dent back out.