Physical Science Review 2

Where is most of the mass in an atom located?

• in the nucleus
• in the protons
• in the neutrons
• in the electrons

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NGSS.MS-PS1-1

What is the atomic number?

• number of protons
• number of neutrons

What is the mass number?

• the number of protons
• the sum of the number of protons and the number of neutrons in the nucleus of an atom 
• the number of electrons
• the number of neutrons

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NGSS.HS-PS1-8

Which element has 31 protons ?

• Gallium 
• Germanium
• Gadolinium
• Polonium

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What number indicates an electron?

• 1
• 2
• 3
• 4

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Which two particles make up the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Molecules and Compounds
• Neutrons and Electrons

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NGSS.HS-PS1-8

How did Mendeleev arrange the elements?

• alphabetical 
• density
• melting point
• atomic mass

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NGSS.HS-PS1-1

The horizontal row on the periodic table is called a

• group
• family
• period
• atomic number

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NGSS.HS-PS1-1

A vertical column is called...

• group
• tower
• period
• crew

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

The number at the bottom of each square on the periodic table is the ...

• atomic number
• atomic mass
• chemical symbol
• element name

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