Structure of Matter review

Which of the following is true about how hydrogen and oxygen can combine to form molecules?

• Hydrogen and oxygen can combine in many ways to form different molecules.

• Molecules composed of hydrogen and oxygen must have at least four atoms.

• Two atoms of hydrogen are always required to bond with two atoms of oxygen.

• When oxygen combines with hydrogen to make a molecule, water will always be produced.

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NGSS.MS-PS1-1

Which of the following best explains the relationship between molecules and atoms?

• Atoms are molecules that have a charge.

• Atoms have smaller parts, called molecules.

• Molecules are made up of two or more atoms.

• Molecules are atoms that have no mass.

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NGSS.MS-PS1-1

Which of the following describes the configuration of Layer 4 of the sodium chloride crystal?

• It will have chlorine atoms in all four of its corners.

• It will be identical in all of its characteristics to Layer 1.

• It will contain 4 atoms of chlorine and 5 atoms of sodium.

• It will have sodium that are bonded only to other sodium atoms.

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Which of the following is the most accurate evaluation of these models?

• Only Students 1, 2, and 4 created acceptable models, since molecules must be made of different types of atoms.

• All of the students created acceptable models because molecules can consist of many different configurations of atoms.

• Only Student 2 created an acceptable model of a molecule, since every molecule must have a balance of atoms.

• All student models are acceptable except that of Student 4, since molecules can't be made of so high a number of atoms.

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NGSS.MS-PS1-1

Graphite is a soft, dark material often used as a lubricant. Diamond is often a clear, hard crystal. Which of the following best explains the difference in these materials?

• The arrangement of the atoms of each one

• The elements of which each one is made

• The number of atoms each one is made of

• The size and shape of the individual atoms

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NGSS.MS-PS1-1

The basic building block of matter; made of electron(s), proton(s), and neutron(s)

• Matter

• Molecule

• atom

• crystal

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The smallest unit of a compound

• Matter

• Molecule

• atom

• crystal

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Solid material whose atoms are arranged in an ordered pattern

• Matter

• Molecule

• atom

• crystal

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Anything with both volume and mass

• Matter

• Molecule

• atom

• crystal

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Matter with consistent properties throughout

• molecule

• substance

• atom

• crystal