Elements and the Periodic Table

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

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NGSS.MS-PS1-1

In the modern periodic table elements are arranged by:

• atomic mass
• atomic number
• valence electrons
• number of isotopes

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What is the chemical symbol for Lithium?

• H
• He
• Li
• N

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Each element is, usually, given one or two letters known as a chemical symbol.

• True
• False

All matter is made of

• atoms
• cells

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What is the atomic mass of "F"

• 9
• 16

• 17
• 19

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These are found on the Periodic Table.

• Compounds
• Elements
• Mixtures

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Metals are found on the ______________ side of the periodic table.

• nonmetals

• left

• right

• metals

A(n) _______ is the smallest particle of an element that has the chemical properties of that element.

• electron

• compound

• atom

• molecule

The chart gives the atomic number and mass number of two elements.

How many protons does Element B have?

• 10

• 20

• 9

• 19

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NGSS.MS-PS1-1