Fall Semester Review OL 24-25

Front

What is density?

Back

Density is the mass of a substance divided by its volume. It determines whether an object will float or sink in a fluid.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a combination of two or more substances that remain distinct and can be easily separated, such as sand and gravel.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater.

Front

What does Newton's 3rd law state?

Back

Newton's 3rd law states that for every action, there is an equal and opposite reaction.

Front

What is magnetism?

Back

Magnetism is a force that can attract or repel certain materials, such as iron, due to the alignment of magnetic fields.

Front

What is the difference between energy and matter?

Back

Energy is the ability to do work or cause change, while matter is anything that has mass and takes up space.

Front

What happens to waves as they carry energy?

Back

Waves carry energy through a medium without transporting matter.

Front

What is the role of gravity?

Back

Gravity is a force that attracts two bodies towards each other, such as the Earth pulling objects towards its center.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice into water, where the substance changes state but not its chemical composition.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron, which results in a new substance.