2425 IA2 Practice Test

Front

What type of heat transfer is responsible for moving the earth’s plates?

Back

Convection: The transfer of heat through the movement of fluids (liquids and gases) due to differences in temperature and density.

Front

What is a mixture of an element and a compound?

Back

A mixture contains two or more substances that are not chemically combined. Example: A mixture of salt (compound) and iron filings (element).

Front

What can dissolve in water?

Back

Sugar: A soluble substance that can mix with water to form a solution.

Front

What does it mean when an object is moving at a constant speed?

Back

It means the object is covering equal distances in equal intervals of time without changing its speed.

Front

What is an example of radiation?

Back

Placing hands near a hot burner: This is heat transfer through electromagnetic waves.

Front

What is conduction?

Back

Conduction: The transfer of heat through direct contact between materials.

Front

What is convection in fluids?

Back

Convection in fluids is the process where warmer, less dense fluid rises and cooler, denser fluid sinks, creating a circulation pattern.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is the difference between a mixture and a compound?

Back

A mixture is a physical combination of substances, while a compound is a chemical combination of elements.