Elements, Compounds, Mixtures

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. For example, NaHCO₃ (sodium bicarbonate) is a compound.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. For example, a salad is a mixture of different ingredients.

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) and iron (Fe).

Front

What is the chemical symbol for Iron?

Back

Fe

Front

How many total atoms are in K₂SO₄?

Back

7

Front

How many types of atoms are in K₂SO₄?

Back

3 (Potassium, Sulfur, and Oxygen)

Front

What is the difference between a compound and a mixture?

Back

A compound is made of two or more elements chemically bonded, while a mixture consists of two or more substances that are not chemically bonded.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout. Examples include elements and compounds.

Front

What is the formula for sodium bicarbonate?

Back

NaHCO₃

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout, such as saltwater.