Chapter 7: Introduction to Matter

Anything that has mass and takes up space is called

• matter

• energy

• heterogeneous

• homogeneous

What holds atoms together in a molecule?

• density

• gravity

• physical bonds

• chemical bonds

H₂O, CO_2, and C₁₂H₂₂O₁₁ are all examples of chemical

• properties

• changes

• bonds

• formulas

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Soil, a salad, and sugar water are all examples of

• elements

• compounds

• mixtures

• atoms

The volume of an irregular object can be measured by

• multiplying the object's length, width, and height.

• multiplying the object's density by its mass.

• submerging the object in water in a graduated cylinder.

• placing the object on a triple-beam balance.

How do liquid water, ice, and water vapor differ from each other?

• The are different states of matter.

• They are different compounds.

• They are made of different kinds of molecules.

• They are made of different kinds of atoms.

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One example of a physical change is

• burning paper

• baking cookies

• toasting marshmallows

• dissolving salt in water.

One example of a chemical change is

• filtering a mixture.

• burning wood.

• boiling water.

• crushing a can.

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Hardness, texture, color, and freezing point are examples of

• chemical properties

• physical properties

What is a group of two or more atoms that are held together by chemical bonds?

• element

• molecule

• mixture

• compound

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