AHS IS HS PS 1-1 a

Identify the noble gases in the periodic table.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-4

Match the elements to their right number of VALENCE ELECTRONS.

• 7

• Silicon (Si)

• 1

• Hydrogen (H)

• 4

• Iodine (I)

Moving left to right across a period, the number of valence electrons generally ​ (a)   in groups 1, 2, 13, 14, 15, 16, 17, and 18 elements.

• increases
• decreases
• stays the same

Tags

NGSS.MS-PS1-1

A ​ ​ (a)   runs down a vertical column on the periodic table. This tell us the number of ​ (b)   of an element.

• A ​ ​ (c)   runs across a horizontal row on the periodic table. This tells us the number of ​ (d)   ​ of an element.

• group
• period
• valence electrons
• energy levels

Categorize the following elements under these 3 main categories:

Groups:

(a) Metal

,

(b) Non-metal

,

(c) Metalloid

• H - Helium

• Ge - Germanium

• Kr - Krypton

• Ba - Barium

• N - Nitrogen

• Si - Silicon

• Fe - Iron

• Na - Sodium

Tags

NGSS.MS-PS1-1