Science Grade 10

Front

Predict the probable explanation for the blown-out tire during the Garcia family's trip to Marine Camp Base Ternate, Cavite.

Back

The volume of gases increases as the temperature increases, causing a blown-up tire.

Front

Gas particles have a very weak intermolecular force of attraction; hence they move as far as possible from each other. They have the tendency to occupy all the spaces they are contained in. if the pressure is increased, the volume will be decreased forcing the gas particles to move closer to one another. Given that the inflated balloon that slipped from the hand of Grace has a volume of 0.50 L at sea level (1.0 atm) and it reached a height of approximately 8 km where the atmospheric pressure is approximately 0.33 atm. Assuming that the temperature is constant. What will be the final volume of the balloon?

Back

2.5 L

Front

Why can Janna still pump air into an already inflated balloon?

Back

Air molecules can be compressed.

Front

Charles’ law states that at constant pressure, the volume of a fixed amount of a gas is directly proportional to the Kelvin (K) temperature. An inflated balloon with a volume of 0.75 L at 30°C is placed in a freezer at -10°C. What happens to the volume if pressure remains constant?

Back

0.65 L

Front

Distinguish which of the following statements correctly defines Boyle’s Law?

• As the temperature increases, volume decreases at constant pressure.
• As the pressure increases, volume decrease at constant temperature.
• As the temperature increases, volume increases at constant pressure.
• As the pressure increases, volume increases at constant temperature.

Back

As the pressure increases, volume decrease at constant temperature.

Front

Example of Boyle’s law: Deep-sea fish die when brought to the surface due to pressure decrease, increasing gas volume in their bodies; divers returning too quickly experience expanding gases forming bubbles; pushing a plunger on a sealed syringe.

Back

All of the above

Front

Which of the following describes Charles’s Law?

Back

Expansion of the balloon as it is being submerged in hot water.

Front

Which of the following properties does NOT describe a gas? Options: pressure, volume, temperature, ductility

Back

ductility

Front

The temperature of nitrogen gas in a not rigid vessel is reduced from 100°C to 5.0°C. What happens to the nitrogen gas molecules?

Back

The average kinetic energy suddenly decreases, thus the pressure decreases.

Front

What happens to temperature when the volume of a gas changes from 75 to 50 ml?

Back

decreases