Word Warriors Flashcard #10

Front

What is an electron?

Back

An elementary particle present in atoms that orbits the nucleus with a negative charge.

Front

What is a basic property of ionic compounds in water?

Back

They break apart to form a negatively charged hydroxide ion (OH-) and have a pH reading higher than 7.

Front

What is acidic precipitation?

Back

Any form of precipitation, including rain, snow, hail, fog, or dew, that is high in acid pollutants, especially sulfuric and nitric acid.

Front

What is a compound?

Back

A substance consisting of atoms of two or more different elements in definite proportions joined by chemical bonds into a molecule, which cannot be separated by physical means.

Front

What is a mixture?

Back

A composition of two or more substances that are not chemically combined and can be separated.

Front

What charge does an electron have?

Back

Negative charge.

Front

What is the pH of basic substances?

Back

Higher than 7.

Front

What are examples of acidic precipitation?

Back

Rain, snow, hail, fog, or dew that contains high levels of acid pollutants.

Front

Can compounds be separated by physical means?

Back

No, compounds cannot be separated by physical means.

Front

What is the difference between a mixture and a compound?

Back

A mixture consists of substances that are not chemically combined, while a compound consists of elements that are chemically bonded.