Science Quiz on Matter and Models Scie 7 Q1

Why do scientists use models?

• They are exact representations of reality.

• They only exist in computer simulations.

• They are always simple and easy to understand.

• They can be used to test ideas and make predictions.

What can be a limitation of scientific model?

• They are never updated or improved.

• They are all based on real-world data.

• They are only used in physics, not other sciences.

• They cannot perfectly capture all the complexities of a system.

What can you say about the particles of liquid in contrast with a solid?

• A predictable pattern of movement.

• Less movement and are more tightly packed.

• The same amount of movement and spacing.

• More freedom to move and more space between them.

What happens to the particles of a material being heated?

• Slightly compacted but can move

• Moves farther away from each other

• Gains more definite shape and compactness

• Nothing happens because heat is not absorbed

Which has a direct relationship with temperature?

• Size of its particles.

• Shape of its particles.

• Type of intermolecular forces present.

• Average kinetic energy (speed) of its particles.

In the 'Personal Space' mini-activity, how did the space between students change as they went from solid to liquid to gas?

• It decreased slightly.

• It remained the same.

• It increased significantly.

• It completely disappeared.

The 'Particle Dance Party' mini-activity demonstrated the relationship between temperature and particle motion according to KMT. As the music got faster, the particles (students) moved:

• Faster.

• Slower.

• The same.

• Erratically.

Which of the following states of matter has particles arranged most closely together?

• Solid

• Liquid

• Gas

• All of the above

According to Kinetic Molecular Theory, what happens to the particles in a substance as its temperature increases?

• They move faster.

• They move slower.

• They stop moving.

• Their arrangement doesn't change.

What do you call the process of changing a solid into liquid by heating it?

• Melting

• Freezing

• Evaporation

• Condensation