Science Flashcard

pH is a measure of the hydrogen ion concentration in a solution. A lower pH value indicates a higher acidity. Each unit change in pH represents a tenfold change in acidity.

A solution with pH 3 is 100 times more acidic than a solution with pH 5.

Gas particles move more rapidly when temperature increases due to increased kinetic energy.

Weight is the force exerted by gravity on an object. On the Moon, gravity is about one-sixth that of Earth, so a person's weight would be one-sixth on the Moon compared to Earth.

Volume can be calculated using the formula: Volume = Mass / Density.

The volume is 4 cm^3.

It means the object's density is less than that of water but greater than that of oil.

Density is the mass per unit volume of a substance. It determines whether an object will float or sink in a fluid based on the relative densities.

Density = Mass / Volume.

Kinetic energy is the energy of motion. In gases, higher temperatures increase the kinetic energy of particles, causing them to move faster.