CA 8th Grade Review

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the components are uniformly distributed and not easily distinguishable, such as saltwater.

Front

What is adhesion in the context of water?

Back

Adhesion is the attraction between water molecules and other substances, which causes water to stick to surfaces like leaves.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means, such as oxygen (O).

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together, such as carbon monoxide (CO).

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that retain their individual properties, such as air or salad.

Front

How do you calculate the mass of a product in a chemical reaction?

Back

To calculate the mass of a product, use the law of conservation of mass, which states that mass is neither created nor destroyed in a chemical reaction.

Front

What indicates a chemical change?

Back

Signs of a chemical change include gas production, color change, temperature change, and the formation of a precipitate.

Front

What is cohesion in water?

Back

Cohesion is the attraction between water molecules, which causes them to stick together, leading to phenomena like surface tension.

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, allowing small objects to float.

Front

What is the law of conservation of mass?

Back

The law of conservation of mass states that in a closed system, the total mass of reactants equals the total mass of products.