Science Unit Test Review Part 2

Front

What is plasma?

Back

Plasma is one of the four fundamental states of matter, consisting of ionized gas with free-moving ions and electrons. Examples include stars and neon signs.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Example: Table Salt (NaCl).

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture in which the composition is uniform throughout. Example: Lemonade.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture in which the composition is not uniform throughout. Example: Salad.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Example: Gold (Au).

Front

What state of matter is involved in a fluorescent lamp?

Back

The state of matter involved in a fluorescent lamp is plasma.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed from two or more elements chemically bonded, while a mixture is a combination of two or more substances that retain their individual properties.

Front

What is an example of a plasma?

Back

An example of plasma is the gas in a neon sign.

Front

How can you identify a homogeneous mixture?

Back

A homogeneous mixture can be identified by its uniform appearance and composition throughout.

Front

What is the chemical formula for table salt?

Back

The chemical formula for table salt is NaCl.