Almost all substances can be classified into three states of matter – solids, liquids and gases. Each state has different properties. Heating and cooling a substance can cause it to change state.
Which theory describes the arrangement and movement of particles in solids, liquids and gases?
In which state of matter are the particles mostly touching but arranged in a random way?
In which state of matter do the particles have the most energy?
Why can liquids not be compressed easily?
Why do solids have a fixed shape?
What is the name of the change when a liquid becomes a solid?
What is sublimation?
What eventually happens if energy is continually removed from a liquid?
What eventually happens to a gas if its pressure is increased?
Which of the following will sublime at room temperature and pressure?