Substances and Their Properties Practice

Front

What happens if you separate all the component pieces of a mixture?

Back

All that is left is pure substances.

Front

Why do people add other metals to gold?

Back

To make it harder.

Front

What is the amount of matter in an object?

Back

Mass.

Front

Fill in the blank: When ___________ of molecules come together, they form a substance.

Back

Trillions of Trillions.

Front

Which of the following does not dissolve in water?

Back

Flour.

Front

What is a mixture?

Back

A combination of two or more substances that retain their individual properties.

Front

What is a pure substance?

Back

A material with a constant composition and distinct chemical properties.

Front

What is the difference between a homogeneous mixture and a heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition, while a heterogeneous mixture has distinct, separate components.

Front

What is solubility?

Back

The ability of a substance to dissolve in a solvent.

Front

What is the role of alloys in metallurgy?

Back

Alloys are mixtures of metals that enhance properties like strength and resistance to corrosion.