Science Final 2

Front

What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). In convection, warmer areas of a liquid or gas rise to cooler areas, creating a circulation pattern.

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat is transferred from one particle to another without the movement of the material as a whole.

Front

What is the relationship between particle movement and temperature?

Back

As temperature increases, the particles in a substance move faster. This increased movement can lead to changes in the state of matter, such as expansion.

Front

What is the atomic number of sodium?

Back

The atomic number of sodium is 11, which indicates it has 11 protons in its nucleus.

Front

What factors affect the rate of solute dissolving in a solvent?

Back

The rate at which a solute dissolves in a solvent is affected by particle size, temperature, and stirring. The quantity of solute does not affect the rate.

Front

What is the definition of a solute?

Back

A solute is a substance that is dissolved in a solvent to form a solution. For example, salt is a solute when dissolved in water.

Front

What is the definition of a solvent?

Back

A solvent is a substance that dissolves a solute, resulting in a solution. Water is often referred to as the universal solvent.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is the principle of conservation of mass?

Back

The principle of conservation of mass states that mass cannot be created or destroyed in a chemical reaction; it can only change forms.

Front

What is thermal expansion?

Back

Thermal expansion is the increase in volume of a substance as its temperature increases, due to the increased movement of its particles.