Atoms and Periodic Table

The positive particles of an atom are ___________.

• electrons

• protons

• neutrons

The center of an atom where its neutrons and protons are is called the _____________.

• nucleus

• electron cloud

• center

Each row in a periodic table is called a 

• Group
• Period
• Row
• Column

Each column in the periodic table is called a 

• period
• group
• cluster
• unit

In the modern periodic table elements are arranged by:

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

Which is an electron?

• A
• B
• C

Tags

NGSS.MS-PS1-1

How many electrons does Si contain? (click to see image)

• 14
• 28
• 2
• 4

Tags

NGSS.MS-PS1-1

What is the mass number and name of an element with 8 protons and 8 neutrons?

• 16 - Carbon
• 16 - Oxygen
• 24 - Oxygen
• 8 - Neon

Using the picture from a periodic table, what is the Atomic Number?

• 26

• Fe

• 55.845

• 56

Using the picture from a periodic table, what is the Atomic Mass?

• 26

• Fe

• 55.845

• 56

Tags

NGSS.MS-PS1-1