Introduction to the Periodic Table

The smallest particle into which an element can be divided and still be the same substance is a (n)...

• electron

• proton

• atom

• molecule

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NGSS.MS-PS1-1

Electrons are particles that

• help make up the nucleus and have no charge

• help make up the nucleus and are positively charged

• are located outside the nucleus and are negatively charged

• are located outside the nucleus and have no charge

What particles make up the nucleus?

• electrons and neutrons

• electrons and protons

• protons and neutrons

• electrons, protons and neutrons

Neutrons are particles that

• help make up the nucleus and have no charge

• help make up the nucleus and are positively charged

• are located outside the nucleus and are negatively charged

• are located outside of the nucleus and have no charge

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NGSS.MS-PS1-1

The mass number minus the atomic number is equal to the number of ....

• protons and neutrons

• protons

• protons and electrons

• neutrons

Elements on the Periodic Table are arranged in order of

• decreasing atomic number

• Increasing atomic mass

• increasing atomic number

• decreasing atomic mass

Which of the following is not on the Periodic table?

• the atomic number for each element

• the symbol for each element

• the density of each element

• the atomic mass of each element

An atom of gold with 79 protons, 79 electrons and 118 neutrons would have a mass number of

• 39

• 158

• 197

• 276

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NGSS.MS-PS1-1

On the periodic table a horizontal row is called

• atomic mass

• period

• family

• group

A vertical column on the periodic table is called a

• family

• group

• atomic mass

• period