test final 2025 cr

Front

What is the element that contains a +2 charge?

Back

Calcium (Ca) is the element that contains a +2 charge.

Front

What causes leaves to float on a pond?

Back

Leaves float on a pond due to surface tension, which is the cohesive force between water molecules.

Front

What is Boyle's Law?

Back

Boyle's Law states that the pressure of a gas is inversely proportional to its volume when temperature is held constant.

Front

If the pressure of a gas increases, what happens to its volume according to Boyle's Law?

Back

If the pressure of a gas increases, its volume decreases.

Front

What is the formula to calculate pressure when volume and temperature change?

Back

The combined gas law: (P1 * V1) / T1 = (P2 * V2) / T2.

Front

What happens to the volume of a gas when its temperature increases at constant pressure?

Back

The volume of a gas increases when its temperature increases at constant pressure (Charles's Law).

Front

What is surface tension?

Back

Surface tension is the elastic tendency of a fluid surface that makes it acquire the least surface area possible.

Front

What is the relationship between pressure and volume in gases?

Back

The relationship is inversely proportional; as one increases, the other decreases.

Front

What is the pressure of a gas occupying 600mL at 900mmHg if the volume is increased to 800mL?

Back

The pressure would be 675 mmHg.

Front

What is the effect of temperature on gas pressure?

Back

Increasing the temperature of a gas at constant volume increases its pressure (Gay-Lussac's Law).