8th Grade Science NC EOG Review

Front

What is a compound?

Back

A compound is a substance composed of two or more different elements that are chemically bonded together.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is made up of two or more elements chemically combined.

Front

What is an example of a compound?

Back

Water (H2O) is an example of a compound, consisting of hydrogen and oxygen.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What is an example of a mixture?

Back

Granite is an example of a mixture, as it contains different minerals that are not chemically bonded.

Front

What are the three states of matter?

Back

The three states of matter are solid, liquid, and gas.

Front

What is the definition of an element?

Back

An element is a pure substance that consists of only one type of atom.

Front

What is the significance of chemical bonds in compounds?

Back

Chemical bonds hold the atoms together in a compound, determining its properties and behavior.

Front

What is the process of photosynthesis?

Back

Photosynthesis is the process by which green plants use sunlight to convert carbon dioxide and water into glucose and oxygen.

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a solution is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.