Which of the following statements best describes the arrangement of particles in a gas? [7g-1]
Which of the following statements best describes the arrangement of particles in a solid?[7g-2]
Which of the following statements best describes the arrangement of particles in a liquid? [7g-3]
Which of the following best describes what happens to the particles of water when it freezes? [7g-4]
Which of the following best describes what happens to the particles of ice when it melts? [7g-5]
Which of the following best describes what happens to the particles of water when it boils? [7g-6]
Which of the following best describes what happens to the particles of water vapour when it condenses? [7g-7]
Which of the following best describes what happens to the particles of water when it evaporates? [7g-8]
The table shows the melting points and boiling points of some substances. Which substance is a solid at 25oC?
The table shows the melting points and boiling points of some substances. Which substance is a liquid at 0oC?
The table shows the melting points and boiling points of some substances. Which substance is a gas at 0oC?
The table shows the melting points and boiling points of some substances. Which substance is a liquid at 30oC?
Air is in a bottle with a tight screw-top. When the bottle becomes warmer, the pressure inside increases because the molecules of air? [7g-13]
Air is in a bottle with a tight screw-top. When the bottle becomes cooler, the pressure inside decreases because the molecules of air? [7g-14]
When the air in a room becomes warmer a hanging balloon blown up with air becomes bigger because the molecules of air? [7g-15]
When the air in a room becomes warmer a hanging balloon blown up with air becomes smaller because the molecules of air? [7g-16]
The table shows the melting points and boiling points of some substances. Which substance is a liquid at 20 oC?
The table shows the melting points and boiling points of some substances. Which substance is a solid at 20oC?
The table shows the melting points and boiling points of some substances. Which substance is a gas at -60oC?