SCIENCE REVIEW 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 resembles the Plum Pudding Model of the atom?

• A tiny, solid ball with negative charges stuck on the outside.

• A complex mathematical equation describing electron behavior.

• A miniature solar system with planets orbiting a central nucleus.

• A positively charged sphere with negatively charges scattered throughout.

What is the characteristic of solid particles as seen in its particle model?

• Moving freely and spread far apart.

• Arranged in a specific pattern but with large gaps.

• Vibrating in place with minimal space between them.

• Flowing around each other and constantly changing positions.

What happens to the particles of a material being heated?

• Moves farther away from each other

• Slightly compacted but can move

• Gains more definite shape and compactness

• Nothing happens because heat is not absorbed

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

Which of the following is NOT a factor affecting condensation?

• Pressure

• Temperature

• The color of the surface

• Presence of water vapor in the air

In science, an educated guess is called a/an _______________.

• Conclusion

• Hypothesis

• Observation

• Question