Physical Science Review

Sound reflection is the bouncing back of sound waves when they hit a surface, which can amplify the sound.

Sound travels faster through solids than through liquids and gases because particles are closer together, allowing sound waves to transmit more quickly.

Increasing heat generally speeds up chemical reactions by providing energy that helps break bonds and allows molecules to collide more frequently.

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass. Weight can change depending on the gravitational pull.

The total mass remains the same regardless of how many pieces an object is divided into.

Net force is the total force acting on an object after all the individual forces are combined, determining the object's motion.

Resonance is the amplification of sound that occurs when an object vibrates at the same frequency as the sound waves.

Weight varies on different planets due to differences in gravitational pull, but mass remains constant.

The principle of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it is conserved.

Heat causes chemical changes in ingredients, allowing them to transform into baked goods, such as making a cake rise.