CBA 2 (Acids/Bases, Pure vs Mixtures, LOCM, Properties of Water

Front

What is cohesion in the context of water molecules?

Back

Cohesion is the force that causes water molecules to stick together, forming droplets.

Front

What is adhesion in the context of water and surfaces?

Back

Adhesion is the force that causes water molecules to stick to other surfaces, such as pine needles.

Front

Define a homogeneous mixture.

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, meaning the different components are not distinguishable.

Front

What is the Law of Conservation of Mass?

Back

The Law of Conservation of Mass states that mass is neither created nor destroyed in a chemical reaction; the total mass of reactants equals the total mass of products.

Front

What does the subscript in a chemical formula represent?

Back

The subscript indicates the number of atoms of the element in a molecule.

Front

What is a coefficient in a chemical equation?

Back

A coefficient is a number placed in front of a chemical formula to indicate how many molecules or moles of that substance are present.

Front

Give an example of a homogeneous mixture.

Back

An example of a homogeneous mixture is saltwater, where the salt is completely dissolved in the water.

Front

What is the difference between a pure substance and a mixture?

Back

A pure substance has a uniform and definite composition, while a mixture contains two or more substances that retain their individual properties.

Front

What is the significance of water's high specific heat?

Back

Water's high specific heat allows it to absorb and release large amounts of heat without significant changes in temperature, which helps regulate climate and maintain stable environments.

Front

Explain the concept of surface tension in water.

Back

Surface tension is the cohesive force at the surface of water that makes it behave like a stretched elastic membrane, allowing small objects to float.