Properties of Matter

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

Each column in the periodic table is called a 

• period

• group

• cluster

In the modern periodic table elements are arranged by:

• atomic mass

• atomic number

• valence electrons

Which is an electron?

• A
• B
• C

Tags

NGSS.MS-PS1-1

UP and DOWN columns on the periodic table are

• groups

• periods

SIDE TO SIDE rows on the periodic table are

• groups

• periods

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

• 14

• 28

• 2

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

Tags

NGSS.MS-PS1-1