The Periodic Table

What is the atomic number of hydrogen?

• 4

• 3

• 2

• 1

Which element is known as a semiconductor?

• Gold

• Silicon

• Iron

• Oxygen

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NGSS.MS-PS2-3

What property do all alkali metals share?

• They are brittle

• They explode in water

• They are nonmetals

• They are gases

Which group does chlorine belong to?

• Group 17

• Group 15

• Group 18

• Group 1

What is the atomic number of calcium?

• 15

• 25

• 20

• 30

What is the significance of the atomic number in the arrangement of elements on the periodic table?

• A table for organizing chemical reactions

• A chart organizing elements by their properties

• A tool for calculating atomic mass

• A guide for nuclear reactions

How are elements arranged in the periodic table based on their properties?

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NGSS.HS-PS1-1

What is the atomic number of an element with 17 protons?

• 17

• 34

• 8

• 35

What is the number of protons that the element in this image contain?

• 14
• 7
• 15
• 18

Tags

NGSS.MS-PS1-1

What is the atomic number of potassium?

• 2

• 19

• 39.098

• 40.08

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2