Elements, Compounds, and Mixtures

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Examples include water (H2O) and sugar (C12H22O11).

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include oxygen (O), carbon (C), and uranium (U).

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. Examples include air, salad, and saltwater.

Front

Is water (H2O) an element, compound, or mixture?

Back

Water (H2O) is a compound.

Front

What are the components of sulfuric acid (H2SO4)?

Back

Sulfuric acid is made up of 2 hydrogen (H), 1 sulfur (S), and 4 oxygen (O) atoms.

Front

What is the difference between a compound and a mixture?

Back

A compound is formed by the chemical combination of elements, while a mixture is a physical combination of substances that retain their individual properties.

Front

Give an example of an element found on the periodic table.

Back

Examples of elements include gold (Au), silver (Ag), and iron (Fe).

Front

What is the chemical formula for glucose?

Back

The chemical formula for glucose is C6H12O6.

Front

What is the significance of the periodic table in chemistry?

Back

The periodic table organizes all known elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is the chemical equation for the combustion of hydrogen?

Back

2H2 + O2 -> 2H2O.