How can we know if a certain solid we have is pure or a mixture of different substances?
if it melts at a specific temperature, it is pure. However, if it melts over a range of temperatures, it is a mixture.
Which two states of matter have the ability to flow?
liquid and gas.
Describe the movement of liquid particles
in liquid, particles are close to each other and they move around one another.
How strongly do the particles attract in case of solid, liquid and gas?
Very strong attraction in solid, slightly less attraction in liquid and very weak attraction in gas.
What happens to the movement of particles when a substance is heated.
The particles move faster and further away from each other.