Chemistry Flashcard Review 24

Front

What is an odor classified as in chemistry?

Back

Odor is classified as a Physical Property.

Front

How many atoms of oxygen are in carbon dioxide (CO₂)?

Back

There are 2 atoms of oxygen in carbon dioxide (CO₂).

Front

Which of the following is different from the rest: Nitrous Oxide (N₂O), Ozone (O₃), Carbon Dioxide (CO₂), Dihydrogen Monoxide (H₂O)?

Back

Ozone (O₃) is different from the rest.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together. It can be a compound or a simple molecule like O₂.

Front

What is a compound?

Back

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

Front

What state of matter is represented by particles that are far apart and move freely?

Back

This state of matter is Gas.

Front

What is the difference between a physical property and a chemical property?

Back

A physical property can be observed without changing the substance's identity, while a chemical property describes a substance's ability to undergo a chemical change.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H₂O.

Front

What is the process called when a solid turns directly into a gas?

Back

The process is called sublimation.

Front

What is the pH scale used for?

Back

The pH scale is used to measure the acidity or basicity of a solution.