Which inference explains the pressure of gas inside a can?(1 point)
gas particles collide with and push on the walls of the container
molecules of a gas are in constant motion
a container of a gas is mostly empty space
the motion of the particles is rapid and random
What did scientists infer from Robert Boyle’s Law in terms of kinetic theory?(1 point)
A decrease in volume means that the gas particles are more crowded together which increases the pressure.
An increase in temperature increases the kinetic energy of the particles which increases the pressure.
When a gas is heated, the gas molecules speed up because their kinetic energy has increased which increases the volume.
Particles collide with each other and with the walls of their container in perfectly elastic collisions in which no energy is lost.
Which piece of evidence best supports Boyle’s Law?(1 point)
He doubled the pressure of the gas, and he observed that the volume of the gas decreases by one-half.
He doubled the pressure of the gas, and he observed that the volume of the gas decreases by one-half.
He filled balloons with a variety of gases, raised the temperature of balloons, and found that the volume increased.
He found that the volume was directly proportional to the pressure.
He studied the relationship between pressure and temperature of a gas at a fixed volume.
Which option is a well-supported description of an observation?
scientific theory
hypothesis
evidence
scientific law
To explain combustion, phlogistonists once believed that materials that can burn contain a substance called phlogiston, which is released as the material burns.
What statement about scientific theory applies best to phlogiston.
Scientific theories can change over time.
Scientific theories can become scientific laws.
Scientific theories can start as scientific laws.
Scientific theories can be proven.
