Unit 4 Test Review

How many valence electrons does Carbon (C) have?

• 3

• 4

• 5

• 6

How many electron shells does Carbon (C) have?

• 2

• 4

• 6

• 8

Which element would be the most reactive?

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Is Silica (Si) a metal, metalloid or nonmetal?

• metal

• metalloid

• nonmetal

• all of the above

Tags

NGSS.MS-PS1-1

How many protons, neutrons and electrons are in Sodium (Na) if it has an atomic number of 11 and atomic mass of 22?

It would have ​ (a)   protons, ​ (b)   neutrons and ​ (c)   electrons.

• 11
• 22
• 33

Tags

NGSS.MS-PS1-1

Which particle in the nucleus has no charge?

• proton

• neutron

• electron

• none of them have a charge

Which group on the periodic table tends to be very stable and non-reactive?

Tags

NGSS.MS-PS1-1

An unknown element has good conductivity, solid at room temperature, and has two valence electrons. In which group would it most likely belong to?

• metal

• nonmetal

• metalloid

• it does not belong to any of them

Tags

NGSS.MS-PS1-1

Which atom will tend to GAIN an electron to bond?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

The periodic table that is used today is the same one first created by Dmitri Mendeleev.

• True

• False