24-25 Midterm Review

Front

What happens to powdered sugar when it is mixed with moist fruit?

Back

The sugar dissolves in the moisture on the fruit.

Front

What is the process called when light bends as it passes through a magnifying glass?

Back

Refraction.

Front

Why is plastic used to cover wires carrying electricity?

Back

Plastic is a good insulator.

Front

What are the physical properties of substances?

Back

Characteristics that can be observed without changing the substance, such as color, density, and melting point.

Front

What is an insulator?

Back

A material that does not allow electricity to flow through it easily.

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing back of light, while refraction is the bending of light as it passes through different materials.

Front

What is the purpose of a magnifying glass?

Back

To make items appear larger by bending light.

Front

What can happen if two wires carrying electricity come too close together?

Back

They can create a spark that may start a fire.

Front

What is the definition of density?

Back

Density is the mass of a substance divided by its volume.

Front

What is a mixture?

Back

A combination of two or more substances that retain their individual properties.